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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 (186,288)
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Shopper Testimonials
“When I saw the horse on the front of this card and the background it reminded me so much of my neice's horse and knew I had to get it. She recently had to put him to rest at 17 years old. Both her and her mother commented on how beautiful the card was. I think it brought comfort during this difficult time.”
Janet - May 31st, 2025
“I love these cards. It is great to be able to personalized them. And the delivery is very quick.”
Cathy - Jun 1st, 2025
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Cards: 615 Pages: 21
Most Popular Newest Show adult cards
Happy 21st Birthday with Pink Polka Dot Teapot of …
Happy 21st Birthday Smiling Husky Dog, Fun 21st Bi…
Polka Dot Candles for 21st Birthday in Beer Mug on…
Twenty-First Birthday Party Girl Customizable card
Humorous 21st Birthday Card You’re Legally An Adul…
21st Birthday, Blue Squares, card
Happy 21st Birthday with Typewriter Moustache & Zi…
Surfer 21st Birthday with Surfboard in Ocean Graph…
Religious 21st Birthday Card
Cats Texting 21st Birthday (Bud & Tony) card
Humorous 21st Birthday Card You Make Me Feel So Ol…
I ’herd’ it was your birthday - 21 years old card
Happy 21st Birthday Funny Forgetful President Humo…
21st Birthday Slot Machine Vegas Style Champagne C…
Red Wine and Rose Happy 21st Birthday card
Custom Age Specific Birthday Wine and Colourful To…
Eclipse 21 card
21st Birthday Custom Photo And Name Balloons With …
Happy 21st Birthday Funny Cat in Hula Outfit Humor…
21st Birthday, Celebrations, with 4 rows of Buntin…
Happy 21st Birthday, Monarch Butterfly on Red Milk…
21st Birthday Custom Name Religious Swirls Red and…
Humorous 21st Birthday Wish I Had Some Profound Wo…
21st Birthday Humor - Guy card
Club 21 Blue card
21st Birthday Custom Photo And Name Balloons With …
21st Birthday Wishes Watercolor Pink Roses Illustr…
21st Birthday in stage spotlight with red curtains…
Funny Birthday Card for a 21 year old card
21 Years Old Macarons with Candles Happy Birthday …
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