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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
“My dentist will love his thank you card. This is a colorful and beautiful card. It has the most meaningful words to let him know how much I appreciate him for all his help and care which has truly made a difference in my life.”
Ruby - Nov 3rd, 2026
“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
Cards per Page:
Cards: 4,861 Pages: 163
Most Popular Newest Show adult cards
Happy 62nd Birthday to a Wonderful Little Sister, …
Birthday Heart of Flowers for a Sweet Sister on he…
Sister 3rd Birthday Teddy Bear Princess card
Funny 80th Birthday for Sister Cat and Dog and Bir…
Happy 72nd Birthday or a Stunning Sister, Purple A…
Berry Happy Birthday for Sister, Fresh Cut Strawbe…
Happy Birthday Monarch Butterfly, Twin Sister card
Happy 55th Birthday for a Sister, Rudbeckia flower…
Birthday, Big Sister-Dark Blue and Lilac Art Nouve…
Birthday Card For Sister From Sister Happy Birthda…
Sister Elephant - I did knot forget! card
59th Birthday for Sister, Pearls and Petals card
Sister Birthday Watering Can Sprinkling Hearts car…
Magical Birds Twin Sisters Birthday card
Sister 56th Birthday White Flowers card
Sister 85th Birthday White Flowers card
Birthday for Sister Blueberries Botanical Art Pers…
Happy Birthday for Little Sister-Mouse and Sunflow…
Happy Birthday To My Sister Two Girls Sitting At N…
Twin sister’s Birthday with lily of the valley bou…
Sister or Sis Happy Birthday Cute Chihuahua Puppy …
Happy Birthday Sister, Beaded Frame, Pink and Peac…
Birthday, Sister, Butterflies and Flowers in Pink,…
Happy 37th Birthday Sister with Typewriter, Chicka…
Birthday to Sister Peonies Light Blue card
Best Sister Ever 13th Birthday Typography in Pink …
Sis Birthday - Cardinal card
Sister Happy Birthday Party Parrots card
Birthday to Sister Love You Latte Coffee card
Happy 93rd Birthday to a Special Sister, Orange fl…
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