21st Birthday Party Supplies

Celebrate the exciting milestone of turning twenty-one with our curated collection of 21st birthday party supplies. Discover stylish birthday decorations, balloons, cake toppers, banners, and themed tableware perfect for memorable 21st birthday celebrations.

From chic dinner parties to festive celebrations with friends, these decorations help create a stylish and unforgettable milestone birthday.

46 products
Sale
Garland of paper cocktail glasses, bottles, bows, and a pink heart cake strung on white, for a 21st birthday
Cocktail garland hung above a pink party table with a tiered heart cake and place settings
21st Birthday Cocktail Garland Banner
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Regular price$17.00 Sale price $12.00
Sale
Happy Birthday cake napkin with pink script, sprinkles, red cherries, and a blue frosting border, flat view
Two Happy Birthday cake napkins on a pink table beside red plates for a birthday party
Happy Birthday Cake Napkins
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Regular price$13.00 Sale price $11.00
Sale
Peach and white striped cocktail napkins printed It's Spritz O'clock with an orange spritz drink, for a summer party
Packaged Spritz O'clock cocktail napkins with peach stripes and an orange drink illustration on pink
Spritz Cocktail Napkins
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Regular price$19.00 Sale price $13.00
Sale
Round pink paper party plate with green olives, martini glasses, and a gold foil rim, shown flat on white
Pink martini party plates and matching olive napkins on a dark green tablecloth with martini glasses and stars
Martini Party Plates
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Regular price$20.00 Sale price $14.00
Sale
Square white cocktail napkin printed with pink martini glasses and green olives with red pimentos, shown flat
Stack of martini cocktail napkins on a green tablecloth beside an olive-garnished martini and pink poker chips
Martini Cocktail Napkins
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Regular price$19.00 Sale price $13.00
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A tini bit older cocktail napkin on white, black script between two espresso martini glasses with black bows and polka dots
Espresso martini cocktail napkins scattered on a white table with coffee beans, chocolate chip cookies, and a candlestick
A Tini Bit Older Espresso Martini Cocktail Napkins
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Regular price$18.00 Sale price $13.00
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Pink martini glass shaped cocktail napkin with a green olive pick, a die-cut paper napkin shown on white
Martini shaped cocktail napkins fanned on red velvet with pink poker chips, dice, and a dirty martini
Pink Martini Cocktail Napkins
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Regular price$15.00 Sale price $13.00
Sale
Extra dirty martini dinner plate and green olive plate with a red pimento dot, a martini party plate set on white
Martini party table with an olive plate, extra dirty dinner plate, fork, napkin, and a dirty martini with olives
Extra Dirty Martini Party Plates
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Regular price$29.00 Sale price $12.00
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Martini temporary tattoo sheet in its pink checkered packaging with olive and cocktail glass designs
Two wrists wearing gold foil martini tattoos reading Shaken, Tini Time, and With a Twist on pink
Martini Temporary Tattoos
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Regular price$12.00 Sale price $7.00
Sale
A Tini Bit Older black satin birthday sash with gold foil lettering and a rhinestone pin on white
Birthday girl in a lavender cardigan wearing the black A Tini Bit Older sash across her body
A Tini Bit Older Birthday Sash
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Regular price$23.00 Sale price $16.00
Sale
Pale pink Birthday Girl satin sash with white script, laid out on white beside a gold safety pin
Pink Birthday Girl sash on a pink table with iridescent plates, scrunchies, and hair clips for a birthday party
Shimmer Birthday Girl Sash
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Regular price$20.00 Sale price $14.00
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Iridescent fringe headband with silver Birthday Girl script on a white headband, shown on white
Woman resting her chin on her hand wearing the iridescent Birthday Girl fringe headband on pink
Birthday Girl Iridescent Fringe Headband
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Regular price$18.00 Sale price $15.00
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Gold fringe headband with Birthday Girl script on a white headband, shown on a white background
Smiling woman wearing the gold Birthday Girl fringe headband against a pink backdrop for a birthday party
Birthday Girl Gold Fringe Headband
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Regular price$20.00 Sale price $15.00
Sale
Cake slice candle holder with pink checkered sides and a strawberry, holding a white taper for a birthday table
Checker cake candle holder in its green and white Sweetie gift box
Checker Cake Candle Holder
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Regular price$15.00 Sale price $8.50
Sale
Margarita glass accordion banner with green honeycomb drinks and pink stems strung in a swag, on white for a fiesta
Two rows of margarita glass banners hung on a pink wall above a cocktail bar for a bachelorette party
Margarita Accordion Banner
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Regular price$18.00 Sale price $15.00
Sale
Just a Spritz Older banner in orange glitter letters with pink spritz glass cutouts, shown on white
Just a Spritz Older banner on a pink wall above a party table of orange spritz cocktails for a birthday
Just a Spritz Older Birthday Banner
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Regular price$18.00 Sale price $14.00
Sale
Two strands of spritz glass accordion banner with orange honeycomb drinks and striped straws, on white for an aperitivo party
Spritz cocktail banners hung in two rows on a pink wall above orange flowers and drinks for a summer soiree
Spritz Accordion Banner
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Regular price$20.00 Sale price $14.00
Sale
A Tini Bit Older gold foil birthday banner on white, two pre-strung lines with pink martini glass and olive accents
A Tini Bit Older banner hung on pink velvet drapes above a martini bar with olive cocktails and a gold shaker
A Tini Bit Older Birthday Banner
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Regular price$18.00 Sale price $12.00
Sale
Pink martini glass honeycomb banner on white, gold foil glasses with olive picks and pink tissue drinks in two rows
Martini glass honeycomb banner draped in two rows on pink velvet curtains above a bar with martinis and a gold shaker
Pink Martini Glass Honeycomb Banner
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Regular price$20.00 Sale price $15.00
Sale
Espresso martini banner close-up, gold foil martini glasses with brown tissue honeycomb and black bow cutouts on white
Espresso martini banner hung in two rows above a white birthday cake with black bows and lit gold taper candles
Espresso Martini Birthday Banner with Black Bows
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Regular price$18.00 Sale price $14.00
Sale
Pair of metallic espresso brown foil fringe curtains side by side on a white background
Brown foil fringe curtain behind espresso martini glasses and bows on a white party table
Espresso Martini Fringe Curtain Set
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Regular price$19.00 Sale price $18.00
Sale
Two panels of sage green metallic foil fringe curtain shown side by side on a white background
Sage green foil curtain hanging against a pink wall as a shimmering party photo backdrop
Sage Green Foil Curtain
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Regular price$20.00 Sale price $14.00
Sale
Rose gold cheers foil balloon banner for a bachelorette party
Close up of the rose gold cheers foil letter balloons
Bachelorette Cheers Foil Balloon Banner
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Regular price$12.00 Sale price $5.00

Turning twenty-one is one of life's most exciting milestone birthdays, and the celebration should feel just as memorable as the moment itself. At Bonjour Fête, we believe milestone celebrations deserve thoughtful design, beautiful details, and a sense of occasion. Our curated collection of 21st birthday party supplies includes stylish decorations, tableware, balloons, cake toppers, banners, and celebration decor chosen to help hosts create truly memorable parties.

Whether you're planning a festive cocktail celebration, a chic birthday dinner, or a lively gathering with friends, the right decorations help set the tone for the entire event. Our design team carefully curates collections that reflect current party trends, timeless celebration themes, and elevated entertaining ideas, making Bonjour Fête a trusted destination for party inspiration.

Popular 21st birthday party themes often include elegant black-and-gold celebrations, disco-inspired parties, modern cocktail gatherings, and stylish dinner parties. Decorating with statement pieces such as number balloons, milestone candles, custom cake toppers, and coordinated tableware creates a beautiful focal point for photos and celebrations.

Explore our 21st birthday decorations and party ideas to create a celebration that feels festive, sophisticated, and unforgettable.

Celebrate beautifully. Ready. Fête. Go!

FAQs

Start with a cohesive theme and a few statement pieces: number balloons, a balloon garland, milestone candles, and coordinated plates and napkins. A styled dessert table or cocktail station makes a great focal point for photos.

Current 21st birthday trends include chic cocktail parties, black-and-gold milestone celebrations, disco-inspired themes, and aesthetic, stylish dinner gatherings with friends. Many hosts are also incorporating balloon installations, themed dessert tables, and photo-ready backdrops to create memorable party moments.

Milestone birthdays are about creating moments that feel meaningful and memorable. At Bonjour Fête, we believe thoughtful details make the difference. Combining beautiful decorations, cohesive color palettes, stylish tableware, and personalized touches helps transform a simple gathering into an unforgettable celebration.