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Birthday Cards for Sister

Browse our collection of birthday cards for sisters! What relationship in your life is more special than the one you share with your sister? No matter what stage of life you are both in, whether she is older, younger or even a twin, we have the perfect card to express your heartfelt birthday wishes. Our birthday cards for sisters cover the gamut from sweet and sentimental to funny and sarcastic.

We offer cards for milestone birthdays, pretty cards, sentimental cards, trendy cards, humorous cards and cards that can be customized to say just what you want. You can even add a picture to make your card truly one-of-a-kind. Don't settle for another generic card off the rack, create a personalized card that she'll cherish as a keepsake for years to come! Once you find the perfect birthday card for your sister, we'll print and mail it the next day!
Birthday Cards for Sister

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Shopper Testimonials
“I have used Greeting Card Universe (GCU) for quite some time. It is a pleasure to write a review for them. The website is the best of the sites I have seen, which are similar to GCU. I have found a card -- every time -- for-every- reason that I've needed. Thank you for the great card! Anthony”
Anthony - Nov 2nd, 2026
“I like that I can have a theme for Christmas this year snowmen (or snowpersons) last year it was trees. Can't remember the other years. Thank you for making it so easy to order.”
Phyllis - Nov 4th, 2026
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Cards: 4,840 Pages: 162
Most Popular Newest Show adult cards
Best Sister Ever 98th Birthday Typography in Pink …
Best Sister Ever 99th Birthday Typography in Pink …
Sister 71st Birthday Pink Teacup with Lily of the …
Best Sister Ever 100th Birthday Typography in Pink…
Happy 42nd Birthday Sister with Typewriter, Chicka…
Best Sister Ever 101st Birthday Typography in Pink…
Happy Birthday Sister on textured golden peacock f…
Happy 44th Birthday Sister with Typewriter, Chicka…
Sister happy Bday card
Sister Birthday Floral Watercolor card
Best Sister Ever 103rd Birthday Typography in Pink…
Happy Birthday Sister Asters card
Birthday Heart of Flowers for a Sweet Sister on he…
22nd Birthday for a Special Sister, Magnolia Bloss…
18th Birthday for a Special Sister, Magnolia Bloss…
Happy 48th Birthday Sister with Typewriter, Chicka…
Happy 49th Birthday Sister with Typewriter, Chicka…
Birthday, Sister, Wild Flowers, Real Paper Card
Best Sister Ever 110th Birthday Typography in Pink…
Best Sister Ever 12th Birthday Typography in Pink …
Best Sister Ever 15th Birthday Typography in Pink …
Happy 57th Birthday Sister with Typewriter, Chicka…
Happy Birthday for Sister, Blue Aqua and Red Manda…
Happy 33rd Birthday to a Wonderful Little Sister, …
Best Sister Ever 22nd Birthday Typography in Pink …
Happy Birthday Sister Flowers card
Happy 31st Birthday to a Wonderful Little Sister, …
Sister’s Birthday with Fairy Princess card
Happy 68th Birthday Sister with Typewriter, Chicka…
4th Birthday for a Little Sister Party with Her Ki…
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