Granddaughter 21st Birthday Cards

Discover special 21st birthday cards for granddaughters

Mark a special milestone with a special birthday card. Choose from a variety of 21st birthday cards, starting from 99p, perfect for helping your granddaughter celebrate her big day. We have cute, funny, traditional and modern designs to choose from, so there’s something to suit your relationship perfectly.

Create a personalised granddaughter 21st birthday card

Say Happy 21st Birthday in a unique way with a custom birthday card for your granddaughter. A personalised card is something she will cherish long after her big day, and it’ll always remind her how much she’s loved. You can add her name, age and so much more to our designs.

Why not opt for a photo card? You can add a photo of your granddaughter as a baby to the front of the card to make it special. Don’t forget to explore our wider range of granddaughter birthday cards, where you’ll find an even larger variety.

Find the perfect gift for your 21-year-old granddaughter

Explore our range of gifts for her before you go. You can mark your granddaughter’s 21st with a special keepsake, a classic milestone age gift like a wine glass, or a beautiful bouquet of flowers. You can even surprise her on her doorstep with one of our helium Happy 21st birthday balloons.