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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 (191,704)
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Shopper Testimonials
“Great quality and excellent packaging to protect the delivery. I also love your wide selection of cards. I will be back!”
Susan - Nov 1st, 2026
“I haven't been disappointed with all my card orders...plus a lot of fun to create!”
Mabel - Las Vegas, Nevada - Nov 3rd, 2026
Cards per Page:
Cards: 635 Pages: 22
Most Popular Newest Show adult cards
Birthday,21st, Hint of Grunge on Shades of Gray St…
Happy Birthday - A birdy Told Me you’re 21 card
Happy 21st Birthday with Typewriter Glasses & Sunb…
Happy 21st Birthday Garden Bouquet card
Happy 21st Birthday!! card
Congratulations on Not Barfing on Your 21st Birthd…
On Your 21st Birthday Dream Big with Hot Air Ballo…
Happy 21st Birthday Cartoon Cats Holding a Pink He…
Jubilant Red Lily 21st Birthday Wishes, Custom Nam…
Purple and Yellow Cirlces 21st Birthday Card
21st Birthday, adult humor, A mug of beer in front…
21st Birthday- Humorous Card with baking Hippo car…
Customizable 21st Birthday Baby and Gifts for Brid…
Red Rose a Special 21st Birthday Wish card
21st Birthday Metal Abstract card
Happy Birthday - Mendhi - 21 years old card
21st Birthday Talking Horse card
Club 21 Pink card
21st Birthday Humor card
Eye card
Happy Birthday, 21 today, border collie dog in bob…
21st Birthday Wishes Quirky Fun Modern Cake card
Happy 21st Birthday - Dynamite Dog card
21st Birthday - Colorful Ink Splatter card
Birthday - Being 21 is great card
Vegas at 21? happy birthday card
Beer Mug Neon Sign 21 Years Old Happy Birthday car…
21st Birthday with an Adorable Raccoons Playing Ba…
21st Birthday Lady on Cake with Cocktail. card
21st Birthday Photo Sunshine Flower card
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