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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 (186,471)
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Shopper Testimonials
“Excellent card selection, great quality, easy to order, perfect shipping package, prompt delivery.”
Barbara - Jul 27th, 2025
“I am delighted with your company & the wide selection it offers! I also love that inside verses can be changed & cards can be personalized! I will use this company often!”
Christine - Jul 29th, 2025
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Cards per Page:
Cards: 615 Pages: 21
Most Popular Newest Show adult cards
Humorous 21st Birthday Squirrel Football Themed Ca…
21st Birthday card
Vegas at 21? happy birthday card
Drink Like You’re It’s Your 21st Birthday card
21st Birthday Photo Sunshine Flower card
Twenty First Birthday Wishes card
Happy 21st Birthday, Cake with 21 Candles card
21st Birthday Fireworks And A Glowing Present card
21st birthday, awfull football jokes card
Happy 21st Birthday, As The Sun Rises, Palm Tree c…
21st Birthday with an Adorable Raccoons Playing Ba…
Happy Birthday - 21 years old - Kitty and Cake in …
Wet My Plants - 21st Birthday card
21st birthday, Aged to perfection with wine splash…
Birthday cake with candles - happy 21st birthday c…
21st Birthday Wishes Quirky Fun Modern Cake card
Birthday, 21st, Black Acoustic Guitar card
21st birthday card, a girl with a tattoo on her bo…
Happy 21st Birthday Pole Dancer sillouettes card
Happy Birthday 21 Today Colorful Cupcake with Cand…
Happy 21st Birthday! card
Becoming a Man - 21st Birthday card
21 Today Teddy Bear card
21st birthday, awful baseball jokes card
21st Birthday Flower Numbers card
21st birthday with a stitched flower card
21st Birthday Card Blue Floral card
Humorous 21st Birthday Childhood Is Expired card
Happy Birthday Beers To You on Your 21st Birthday …
21st Birthday Dream-catcher and full moon with Sib…
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