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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 (186,933)
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Shopper Testimonials
“I have been ordering with your company for quite some time and love all the options and selections and personalization as well. What’s not to like? I have not shopped in a card store in years because I love your variety, prices and website options. So happy I discovered you! Your cards are beautiful and there is something for every occasion, event, etc that is happening in your life to chose a card from you! Love it! Your company is awesome!!!!”
Debra - Glen Mills, Pennsylvania - Aug 11th, 2025
“I absolutely LOVE Greeting Card Universe. It’s my go to for ALL my cards, as I said bye bye to Hallmark. GCU has any type of card you’re looking for. User friendly website and amazing super fast delivery.”
Lori - Aug 9th, 2025
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Cards per Page:
Cards: 4,615 Pages: 154
Most Popular Newest Show adult cards
For Sister’s June Birthday Pink Roses with Butterf…
Sister Happy Birthday Kawaii Cartoon Cactus Plants…
Sister Happy Birthday Space Hamster card
For Sister Birthday Pink Carnations with Snowdrops…
Sister Happy Birthday Otter with Birthday Hat and …
Sister Birthday Botanical with Peach Magnolias and…
Sister Happy Birthday Laughing Brie Cheese card
Sister Happy Birthday English Bulldog Champagne To…
For Sister Birthday Peach Chrysanthemums for Novem…
Sister Birthday Marigolds with Blue Sky card
Sister Happy Birthday DJ Bulldog card
Happy Birthday to my special Sister, Vintage Roses…
Happy Birthday Sis, Cute and Funny with Dog and Ol…
Sister Happy Birthday Unicorn Rainbows Hand Letter…
Birthday Flowers for Sister card
Sister Happy Birthday Amazon with Birthday Cake ca…
Happy 70th Birthday to a Special Sister, Orange fl…
Sister Happy Birthday Bear Hugs card
Custom Front Sister Chocolate Cake Strawberry Happ…
Best Sister Ever 65th Birthday Typography in Pink …
Sister Happy Birthday Kawaii Wizard Magical Ginger…
Sister Happy Birthday Hot Mess Kawaii Dumpster Fir…
Sister Happy Birthday Scientist at Blackboard card
Sister Happy Birthday Goat on Mountain Top card
Sister Happy Birthday Kawaii Cartoon Dino card
Sister Happy Birthday Toad with Glasses card
Sister Happy Birthday Bulldog Puppy card
Sister Happy Birthday Little Rat with Cocktail car…
Sister Happy Birthday Sweet Kawaii Birthday Cakes …
Sister Happy Birthday Zombie with Birthday Cake ca…
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