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21st Birthday Cards

Drink ... drank ... drunk? Not too much, we hope. Send a 21st Birthday Card to someone who has hit that milestone like a boss and is ready to celebrate. Choose from 790+ exceptional designs, add your personal message, and we'll mail it next business day. Throwing a party? No worries. We have 21st Birthday Party Invitations, too. Yeah, 'cause we're cool like that.

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Birthday (186,367)
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Shopper Testimonials
“The cards are always good quality and arrive quickly. I love how there are so many options to find the perfect card and then personalize it. Will continue ordering from Greeting Card Universe.”
Janet - May 31st, 2025
“A++ for custom greeting cards of ALL kinds!!!”
Zachary - May 31st, 2025
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Cards: 614 Pages: 21
Most Popular Newest Show adult cards
For 21st Birthday The Manor House York Garden Wate…
For 21st Birthday Watercolor Pink Roses Botanical …
For 21st Birthday Rydal Mount Garden England Lands…
For 21st Birthday Watercolor Daffodils Botanical F…
For 21st Birthday Whitley Bay St Mary’s Lighthouse…
21st Birthday Wishes Fairy Princess Pen Watercolor…
For 21st Birthday Staithes Yorkshire England Coast…
Simply-stated for 21st birthday is a martini with …
Happy 21st Birthday card
Happy 21st Birthday - White Poppy and Garden Flowe…
Happy 21st Birthday, White orchids on green card
Birthday,21st,Purple Squares Pattern/Faux Gems car…
21st Birthday, raccoons stealing a present card
Happy 21st Birthday Balloons card
Happy 21st Birthday Concept Muscle Car card
Happy 21st Birthday Concept American Pickup Truck …
Happy 21st Birthday Watercolor Vintage Steam Train…
Birthday 21st - Butterfly - Flowers - Pearls card
Happy Birthday, City Buildings card
Happy 21st Birthday Watercolor Vintage Classic Mot…
I Celebrate You at 21! - Harlequin Happy Birthday …
Cupcake with Number Candles 21 Years Old Birthday …
21 and Terrific for Her Pink Background card
21st Birthday Perfect Day with horses and butterfl…
Happy 21st Birthday Concept Nostalgic American SUV…
Happy 21st Birthday Concept Nostalgic American Del…
21st Happy Birthday Card - Summer bouquet card
Happy 21st Birthday to Someone Special, Orange flo…
Happy 21st Birthday - Landscape with wildflowers a…
Happy 21st Birthday Watercolor Vibrant Vintage Ste…
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