35 The Summer I Turned Pretty Birthday Ideas

Bringing the coastal charm of Cousins Beach to a birthday celebration involves a mix of preppy aesthetics, nostalgic summer activities, and specific nods to the series.

This guide focuses on creating a bright, airy atmosphere using a palette of sky blue, navy, and crisp white to capture the essence of a classic East Coast summer.

Cousins Beach Decor & Atmosphere

1. Preppy Coastal Party Accents

Preppy Coastal Party Accents the summer i turned pretty birthday

Credit: @cs_partyexpress / Instagram

Welcome guests with a custom sign that adapts the series title to the birthday age.

A light blue palette and serif typography instantly establish the preppy, coastal aesthetic associated with the show’s setting.

Mount the board on a wooden easel and embellish with a gingham fabric bow for a polished, tactile finish that feels more custom than a standard print.

Preppy Coastal Party Accents the summer i turned pretty birthday

Credit: @cs_partyexpress / Instagram

Create a cohesive dining experience by layering ocean-inspired textures on guest tables.

The combination of white roses and blue hydrangeas provides a lush, garden-by-the-sea feel that fits the coastal grandmother style.

Use a crinkled linen runner to suggest the movement of water and anchor the look with oversized white scallop shells and framed photos of the birthday person.

2. Personalized Title Backdrop Display

Personalized Title Backdrop Display the summer i turned pretty birthday

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Integrate the guest of honor’s name into the iconic series title for a central focal point above the main table.

Custom signage anchored by blue and white stripes sets a clear thematic tone while providing a high-impact background for photos.

Drape a decorative fishing net over one corner of the banner and secure it with small seashells or wooden clothespins to add a three-dimensional coastal texture.

Cousins Beach Celebration Area the summer i turned pretty birthday

Credit: @adorobaloesabc / Instagram

Construct a central photo area using a curved backdrop and a custom sign that mirrors the series title.

A balloon garland in shades of sky blue, navy, and cream mimics the colors of the ocean and sand, providing a strong visual anchor for guests.

Place the arch slightly behind the main table to allow enough space for group photos without disturbing the food display.

3. Coastal Picnic Tablescapes

Coastal Picnic Tablescapes the summer i turned pretty birthday

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Arrange a low-profile picnic table on an outdoor rug for a relaxed, beachy dining experience.

Using floor cushions instead of chairs encourages a casual atmosphere reminiscent of a summer house gathering.

Layer several neutral-toned rugs to define the space and provide a comfortable seating area for guests.

Coastal Picnic Tablescapes the summer i turned pretty birthday

Credit: @rugged.luxe / Instagram

Incorporate nautical textures into the tablescape with fishnets, gauze runners, and starfish accents.

The combination of light blue fabrics and white ceramics keeps the table looking sophisticated and clean.

Use gold-toned cutlery and napkin rings to add a touch of elegance to the rustic wooden table.

4. Cousins Beach Dining Decor

Cousins Beach Dining Decor the summer i turned pretty birthday

Credit: @milapartyco / Instagram

Set up long dining tables outdoors with white fringed umbrellas to capture the airy, sun-bleached look of a coastal summer.

The umbrellas provide necessary shade for outdoor hosting while acting as a large-scale decor element that defines the party space.

Space the umbrellas evenly along the table to ensure all guests are covered and to create a symmetrical, high-end visual.

Cousins Beach Dining Decor the summer i turned pretty birthday

Credit: @milapartyco / Instagram

Layer the table with rattan chargers and use light blue shell-shaped place cards to add a preppy, personalized touch.

Mixing natural textures with specific show-inspired motifs like shells creates a table that feels both thematic and sophisticated.

Write guest names in white ink on the blue shell cards to ensure they are legible against the coastal color palette.

5. Custom Age Title Display

Custom Age Title Display the summer i turned pretty birthday

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Transform a standard birthday milestone into a series-inspired moment by customizing the title for a photo backdrop.

Using the ‘The Summer I Turned [Age]’ phrasing immediately identifies the theme while the muted blue and cream palette maintains a sophisticated coastal aesthetic.

Incorporate nautical textures like decorative fishing nets and bow-shaped foil balloons to add dimension to the display without needing professional floral arrangements.

6. Coastal Floral Photo Zone

Coastal Floral Photo Zone the summer i turned pretty birthday

Credit: @mimibelleevents / Instagram

Transform a standard birthday sign into a series reference by adapting the show’s title font and phrasing to match the guest of honor’s new age.

Blue and white hydrangeas paired with metallic balloons create a sophisticated, airy atmosphere that feels like a summer morning at the beach.

Layering sand-colored pedestals with clusters of silk flowers and floating candles in glass cylinders adds height and dimension without requiring a permanent installation.

7. Iconic Book Cover Backdrop

Iconic Book Cover Backdrop the summer i turned pretty birthday

Credit: @balloonmarket.uk / Instagram

Adapt the series’ recognizable typography onto a large-scale focal point to anchor the party space and provide a clear photo opportunity.

Using the ‘The Summer I Turned [Age]’ phrasing instantly connects the event to the source material while making the birthday guest the center of the story.

Swap the bright magenta and orange for the signature Cousins Beach palette of sky blue, navy, and cream to achieve a more coastal preppy look. Anchor the board with disco balls and lanterns at varying heights to create a polished, multi-dimensional display.

8. Coastal Low-Seating Tablescapes

Coastal Low-Seating Tablescapes the summer i turned pretty birthday

Credit: @partyonacloudny / Instagram

Create a relaxed yet refined dining area using a low table and plush floor cushions to mimic a beachside picnic.

The combination of textured white linens and a light blue gauze runner captures the airy feel of the show’s setting without requiring a literal beach.

Tie thin satin ribbons around gold candlesticks and use white hydrangeas to lean into the preppy aesthetic.

Coastal Low-Seating Tablescapes the summer i turned pretty birthday

Credit: @partyonacloudny / Instagram

Arrange oversized floor pillows in alternating shades of white and sky blue to provide comfortable, themed seating for a large group.

Low-profile seating creates a cozy, communal atmosphere that feels more personal than a standard dining table setup.

Use a long, narrow table or a series of coffee tables pushed together to accommodate more guests while keeping the center of the room open.

9. Hydrangea-Filled Vintage Bicycle

A white vintage bicycle with a basket full of blue and white hydrangeas parked by a fence.

Use a white vintage cruiser bicycle as a decorative focal point and photo backdrop.

Nothing says coastal summer like a classic bicycle, and filling the basket with hydrangeas adds a soft, feminine touch that fits the theme.

Place the bike near the entrance or a fence and use a mix of blue and white hydrangeas to create a lush, overflowing look in the front wicker basket.

10. Nautical Indoor Camping Tents

Nautical Indoor Camping Tents the summer i turned pretty birthday

Credit: @rugged.luxe / Instagram

Set up a row of white teepees decorated with navy and sky blue ribbons to bring the Cousins Beach atmosphere indoors for an overnight celebration.

Using shell-patterned throw pillows and textured blue blankets provides a tactile connection to the coastal setting, while a custom sign adapts the series title to the guest of honor’s age.

Place a chalkboard easel at the entrance with a custom message and provide individual trays with themed snacks to keep the space organized for each guest.

11. Coastal Blue Balloon Garland

Coastal Blue Balloon Garland the summer i turned pretty birthday

Credit: @ibbakeshop / Instagram

Assemble a balloon arch using white and various blue tones to create a focal point for the main party area.

The color gradient mimics the ocean, while adding a life ring balloon and starfish cutouts provides a clear nautical direction that fits the coastal preppy style.

Use a mix of 5-inch, 11-inch, and 18-inch balloons to achieve a professional, organic look and secure them with removable adhesive hooks.

12. Nautical Photo Backdrops

Nautical Photo Backdrops the summer i turned pretty birthday

Credit: @freckled__fun / Instagram

Design a central photo area using a sand-colored arch and a balloon installation in sky blue, cream, and white.

Incorporating striped lifebuoy balloons provides a direct nod to the show’s coastal setting without requiring complex props.

Secure the arch with sandbags at the base for outdoor stability and replace the seating with a beach chair to suit teenage guests.

Nautical Photo Backdrops the summer i turned pretty birthday

Credit: @freckled__fun / Instagram

Set the tone at the entrance with a minimalist linen banner featuring the party title and decorative satin bows.

The soft fabric texture and simple typography align with the preppy aesthetic popular among fans of the series.

Use a handheld steamer on-site to remove wrinkles from the fabric after transporting it to the venue.

13. Indoor Focal Point Displays

Indoor Focal Point Displays the summer i turned pretty birthday

Credit: @rugged.luxe / Instagram

Design a central dessert station using arched backdrops and blue-toned balloon clusters.

Soft blue and white colors create a bright, airy feel that matches the coastal aesthetic.

Apply custom vinyl lettering to a central panel to highlight the age milestone.

Indoor Focal Point Displays the summer i turned pretty birthday

Credit: @rugged.luxe / Instagram

Utilize a fireplace mantel as a secondary display area for a themed banner and framed signage.

This setup works well for smaller homes, using existing furniture to anchor the party theme.

Drape a simple cardstock banner across the mantel and add glass jars with eucalyptus for a fresh look.

Belly’s Favorite Treats & Coastal Eats

14. Signature Summer Treats

Signature Summer Treats the summer i turned pretty birthday

Credit: @onefancyparty / Instagram

Set up a self-serve beverage station featuring a pomegranate mocktail and blue-rimmed glassware to mirror the show’s signature drink.

Fresh white hydrangeas and a custom-printed welcome sign add a layer of sophistication that aligns with the coastal aesthetic.

Elevate the drink dispenser on a wooden crate to create visual depth and make pouring easier for guests while maintaining a rustic feel.

Signature Summer Treats the summer i turned pretty birthday

Credit: @onefancyparty / Instagram

Present classic snacks like Swedish Fish and glass-bottle sodas in silver pedestal bowls for a refined take on casual beachside treats.

Chilling sodas in a metal bowl instead of a plastic cooler keeps the snack display looking polished and consistent with the party’s color palette.

Use small blue cardstock labels to identify different snacks, ensuring all stationery matches the broader event theme.

15. Coastal Heart Birthday Cake

Coastal Heart Birthday Cake the summer i turned pretty birthday

Credit: @momfoodventures / Instagram

Customize the birthday cake by adapting the series title to include the guest of honor’s new age, creating a direct reference to the story.

This approach anchors the dessert table in the specific theme while maintaining a clean, preppy look through a consistent color palette.

Arrange the cake on a simple white pedestal and surround it with cupcakes in matching boxes to create a structured display that is easy to transport and serve.

Coastal Heart Birthday Cake the summer i turned pretty birthday

Credit: @momfoodventures / Instagram

Incorporate coastal textures by using various shell shapes and sizes as toppers for a heart-shaped vintage-style cake.

The combination of classic piping and beach elements bridges the gap between the show’s formal debutante scenes and its casual summer vibe.

For a budget-friendly version, use clean, real seashells as decor or press chocolate molds into the frosting for a fully edible alternative.

16. Cousins Beach Muffin & Mocktail Bar

A refreshment table with blueberry muffins and pink pomegranate mocktails on a blue linen tablecloth.

Serve iconic snacks from the series, specifically fresh blueberry muffins and pomegranate-based drinks.

Food plays a significant role in the show’s setting; serving these specific items grounds the theme in the story’s most recognizable moments.

Arrange the muffins in white paper liners on a tiered stand and serve the pomegranate mocktails in chilled crystal glasses with fresh mint sprigs for a sophisticated look.

17. Cousins Beach Dessert Tray

Cousins Beach Dessert Tray the summer i turned pretty birthday

Credit: @ibbakeshop / Instagram

Serve custom sugar cookies featuring blue hydrangeas, beach chairs, and seashell designs.

Detailed icing allows for specific storytelling elements, like the iconic flowers from the series, to be integrated directly into the menu.

Display the cookies in a woven seagrass tray to add natural texture and wrap each one in clear cellophane for easy distribution.

18. Coastal Shell Birthday Cake

Coastal Shell Birthday Cake the summer i turned pretty birthday

Credit: @tiffanyparris / Instagram

Anchor the dessert table with a themed cake that features the series’ signature title phrasing and coastal textures.

Sky blue piping and white chocolate shell accents provide a preppy, beach-inspired look that fits the Cousins Beach aesthetic.

Use light brown sugar or finely crushed graham crackers to mimic sand around the base and top of the cake for added realism.

Coastal Shell Birthday Cake the summer i turned pretty birthday

Credit: @tiffanyparris / Instagram

Incorporate a top-down design that leaves space for personalized text while maintaining a balanced, nautical border.

A clean white frosting base allows the blue accents and gold-toned lettering to stand out clearly for photos.

Apply edible pearls and small starfish molds in clusters rather than a uniform line to create a more natural, ocean-swept appearance.

Debutante Ball Inspired Details

19. Elegant Coastal Dining

Elegant Coastal Dining the summer i turned pretty birthday

Credit: @adorobaloesabc / Instagram

Elevate a casual beach dinner by mixing flowing chiffon runners with formal pearl accents and blue hydrangeas.

The combination of soft blue textiles and white pearls references the transition from beach days to formal debutante events seen in the series.

Use yellow plates to break up the blue and white palette, adding a bright pop of color that feels like summer sunshine.

Layered Coastal Table Runners the summer i turned pretty birthday

Credit: @arteydecoracionbq / Instagram

Combine textures like soft blue chiffon and decorative fishnet to build a multi-dimensional centerpiece.

Adding starfish, hydrangeas, and faux pearls over the netting creates a sophisticated beach look without needing actual sand.

Lay down a base of neutral kraft paper to protect the table and provide a clean background for the blue and white accents.

20. Elegant Debutante Stationery Suite

Elegant white party invitations with navy calligraphy and a pearl accent on blue ribbon.

Elevate the party’s formal elements with sophisticated paper goods that nod to the debutante ball.

The debutante ball is a pivotal event in the show; using high-end stationery brings that sense of occasion to the birthday celebration.

Use thick white cardstock with navy blue calligraphy and add a single flat-back pearl or a small embossed shell to each place card or invitation.

21. Sophisticated Welcome Signage

Sophisticated Welcome Signage the summer i turned pretty birthday

Credit: @rugged.luxe / Instagram

Display a large-scale welcome sign on a classic easel to set a formal tone from the start.

Clean typography and simple line art of surfboards and shells maintain a preppy, mature vibe.

Print the design on foam board for durability and place it near the entrance to guide guests.

The ‘Team Conrad vs. Team Jeremiah’ Station

22. Interactive Character Voting Station

A voting station for a party with two glass jars filled with blue ribbons for Team Conrad and Team Jeremiah.

Set up a designated area where guests can officially choose their favorite brother using themed ribbons or tokens.

This creates an immediate conversation starter and allows fans to engage with the central love triangle of the show in a playful way.

Use two large glass apothecary jars labeled with ‘Team Conrad’ and ‘Team Jeremiah’ in navy blue script, providing navy and sky blue ribbons for guests to tie onto their wrists after voting.

23. Character Initial Favor Totes

Character Initial Favor Totes the summer i turned pretty birthday

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Invite guests to pick a side by offering canvas bags marked with a simple ‘C’ or ‘J’ on the tag.

This interactive element uses specific show references to engage fans while providing a practical gift they can use after the party.

Place these on a light-colored wooden surface or white beadboard to keep the aesthetic bright and airy; fill with blue and white striped tissue paper for a preppy finish.

24. Interactive Character Beverage Station

Interactive Character Beverage Station the summer i turned pretty birthday

Credit: @milapartyco / Instagram

Designate a beverage area where guests can select drinks that represent their favorite characters from the series.

This interactive element encourages guest participation and serves as a major decor focal point.

Drape a neutral bar with a custom ‘Cousins Beach’ sign and provide blue-tinted glassware to keep the look consistent with the show’s palette.

Summer Activities & Photo Ops

25. Cousins Beach Flower Crown DIY

A DIY flower crown station with blue and white hydrangeas and floral supplies on a wooden table.

Provide a creative station for guests to assemble their own floral headpieces using blue and white blooms.

This activity aligns with the ‘clean girl’ aesthetic and the romantic, floral elements seen during the debutante scenes.

Supply pre-cut floral wire and tape alongside bundles of baby’s breath, white roses, and blue hydrangeas to make the assembly process easier for guests.

26. Preppy Beach Volleyball Setup

A beach volleyball net with blue and white striped poles on a sunny lawn.

Incorporate a physical activity by setting up a volleyball net that matches the party’s color scheme.

The volleyball tournament is a major plot point in the series, making this a high-energy way to reference the show.

Wrap the volleyball net poles in navy and white striped fabric and use a light blue or white volleyball to maintain the coastal preppy look.

27. Sculptural Seashell Photo Zone

Sculptural Seashell Photo Zone the summer i turned pretty birthday

Credit: @jennyhan / Instagram

Create a central photography hub that adapts the series’ title font and style for the guest of honor.

Using a large arched panel in sky blue provides a clean, matte surface for custom lettering and serves as a high-contrast anchor for organic balloon clusters. The mix of sandy beige and muted blue balloons mimics the shoreline palette without relying on generic beach props.

For an outdoor setup, secure the wooden or foam board arch to a heavy base or fence to prevent wind issues. Use varied balloon sizes, including tiny filler balloons, to create a textured effect that resembles sea foam or ocean spray.

28. Cousins Beach Sleepover Setup

Cousins Beach Sleepover Setup the summer i turned pretty birthday

Credit: @rugged.luxe / Instagram

Set up individual sleeping teepees with coordinated bedding for a cohesive overnight celebration.

Draping decorative fishing nets over the tents adds a thematic layer without requiring expensive props.

Place a small tray at each station to hold essentials like water bottles, snacks, or skincare favors.

29. Coastal Blue Tie-Dye Station

Coastal Blue Tie-Dye Station the summer i turned pretty birthday

Credit: @little_artist_party / Instagram

Provide a hands-on activity for guests to customize white t-shirts or tote bags with summer colors.

Using individual plastic bins and wire baskets keeps the supplies organized and manageable for an outdoor gathering.

Swap the rainbow dyes shown here for a curated palette of navy, sky blue, and sandy beige to match the Cousins Beach aesthetic.

30. Personalized Painting Stations

Personalized Painting Stations the summer i turned pretty birthday

Credit: @arteydecoracionbq / Instagram

Set up individual painting kits at each place setting to double as decor and a structured activity.

Using white ceramic palettes and blue-handled brushes maintains the preppy color scheme while encouraging guest participation.

Bundle the brushes and palettes with a satin ribbon to keep the workstation tidy and easy for guests to unpack.

Personalized Painting Stations the summer i turned pretty birthday

Credit: @arteydecoracionbq / Instagram

Incorporate themed stationery to introduce the activity with a playful nod to the series title.

Simple line drawings of bows and shells on the cards reinforce the coastal preppy aesthetic without being visually overwhelming.

Print these on heavy cardstock so they can serve as a durable keepsake for guests to take home.

31. Polaroid Memory Wall with Shell Clips

A wall of Polaroid photos clipped to fairy lights with small seashell clothespins.

Capture the day’s memories by having guests take Polaroids and hang them on a decorative display.

The series focuses heavily on nostalgia and capturing fleeting summer moments, making instant photography the perfect fit.

String fairy lights across a white beadboard or wooden frame and provide mini clothespins decorated with small seashells for guests to attach their photos.

Cousins Beach Party Favors

32. Cousins Beach Skincare Favor Bar

A shelf of mini skincare bottles and beauty products with custom Cousins Beach labels.

Offer guests a selection of ‘clean girl’ skincare essentials as a take-home gift.

Skincare and natural beauty are central to the aesthetic of the main characters, making this a practical and popular favor for Gen Z guests.

Include mini face mists, lip balms, and sunscreens with custom labels that feature the ‘Cousins Beach’ name or the birthday guest’s initials.

33. Handmade Shell Jewelry Station

Trays of gold jewelry supplies, puka shells, and pearls for making necklaces.

Create a station where guests can select or make their own beach-inspired jewelry.

Shell jewelry is a nostalgic summer staple that allows guests to take home a piece of the coastal vibe.

Provide gold-toned chains, puka shells, and small pearls in organized wooden trays to keep the station looking tidy and high-end.

34. Custom Embroidered Cousins Sweatshirts

Stacked navy and white sweatshirts with Cousins Beach embroidery and seashells.

Give guests high-quality, cozy sweatshirts featuring classic collegiate-style embroidery.

Oversized sweatshirts are a signature look in the series, and they serve as a long-lasting memento of the event.

Stick to navy blue or white sweatshirts with ‘Cousins Beach’ embroidered in a simple serif font for a timeless, preppy appearance.

35. Custom Burlap Beach Totes

Custom Burlap Beach Totes the summer i turned pretty birthday

Credit: @onefancyparty / Instagram

Assemble personalized burlap gift bags on a white shelving unit to create a functional favor wall that serves as a decorative focal point.

The combination of natural jute textures and sky-blue satin ribbons captures the breezy, preppy atmosphere associated with Cousins Beach.

Position the shelf next to a themed backdrop so guests can take photos with their personalized bags before the event concludes.

Frequently Asked Questions

How do guests dress for a ‘The Summer I Turned Pretty’ themed party?

What are the best ‘Team Conrad vs. Team Jeremiah’ activity ideas?

How can a Cousins Beach vibe be created without living near the water?

What is the significance of the daisy and infinity symbols in the decor?

What menu items best fit the Cousins Beach aesthetic?

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