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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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Birthday (191,720)
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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 have given the GCU name to more than a few of people to whom I have sent your cards. I should be getting a commission for the business I send your way. EVERYONE loves your cards.”
Kathleen - Masonic Home, Kentucky - Nov 2nd, 2026
Cards per Page:
Cards: 4,861 Pages: 163
Most Popular Newest Show adult cards
Happy 22nd Birthday or a Stunning Sister, Purple A…
Happy 95th Birthday or a Stunning Sister, Purple A…
Happy Birthday Special Sister Ballerina Dancer car…
Happy 94th Birthday or a Stunning Sister, Purple A…
Birthday Heart of Flowers for a Sweet Sister on he…
Happy 77th Birthday, Sister, Monarch Butterfly car…
Birthday Heart of Flowers for a Sweet Sister on he…
Happy 76th Birthday, Sister, Monarch Butterfly car…
Happy 81st Birthday for a Sister, Rudbeckia flower…
For Sister Birthday Greeting with Bright Bubbly Pa…
For Sister 14th Birthday with Primrose Flowers and…
Happy 87th Birthday for a Sister, Rudbeckia flower…
Happy 88th Birthday for a Sister, Rudbeckia flower…
Big Sister Birthday Bugs and Kisses Ladybugs card
Happy 97th Birthday to a Special Sister, Orange fl…
99th Happy Birthday Sister, Magnolia Blossom card
Happy Birthday Wishes, for my Little Sister, Butte…
37th Birthday for a Special Sister, Magnolia Bloss…
Sister, 96th, Happy Birthday, Mason Jar, Flowers, …
Sister Birthday Wishes card
Sister Birthday Beach Ocean Sea Strong Empowered B…
Sister, 98th, Happy Birthday, Mason Jar, Flowers, …
For a Sweet Sister on Her 13th Birthday, Starfish …
Happy Birthday Sister, Bright Tropical Floral on p…
Hey Sister, its Your 63rd Birthday, Sea Shells and…
Humorous Birthday For A Sister Sometimes The Only …
Happy Birthday Wishes, for my Sister, Butterfly ca…
Hey Sister, its Your 86th Birthday, Sea Shells and…
Happy Birthday Special Sister, Happy Polar Bear in…
Happy Birthday, Big Sister, Swan in Pond at Sunset…
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