Funny Sister Birthday Cards
Make your sister laugh out loud with one of our funny sister birthday cards. Whether you're looking to make her giggle or snort with laughter: just choose the card, and with same-day dispatch and fast delivery, don’t worry about the rest.
Create Your Own Greetings Card
from$4.00
Ha ha ha you're older than me Card
from$4.00
I'm Not Saying You're Old Card
from$4.00
Zimmer Frame Birthday Card
from$4.00
Only Gift You Need - Relation Card
from$4.00
Shrimply The Best Card
from$4.00
Birthday Cake Fire Hazard Card
from$4.00
Rishi Sunak Happy Birthday Card
from$4.00
Happy Birthday Middle Child Card
from$4.00
Ha-Pea Birthday Card
from$4.00
60 Growth Spurt Birthday Card
from$4.00
Funny Cat Birthday Cake
from$4.00
In Cheese Years Card
from$4.00
Bottomless Brunch Card
from$4.00
Rishi Sunak Birthday
from$4.00
Happy Bir...SQUIRREL Card
from$4.00
Thirties Have Expired Card
from$4.00
Go Bananas Birthday Card
from$4.00
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While some people hope their card will make their sister smile, others hope it'll make her laugh so hard her drink will shoot out of her nose. No one can make you laugh like your sister - from inside jokes to when you've burst out laughing just by making eye contact. We've created our special collection of funny sister birthday cards to help you make this birthday one you'll laugh about for years to come.