Funny Sister Birthday Cards
Celebrate sisterly love and laughter with our collection of funny sister birthday cards. Merging humor with heartfelt messages, each card is crafted to capture the unique bond and endless fun of sisterhood. Explore our thoughtfully designed cards that perfectly embody the joy and quirks of your sister's special day.
A whimsical birthday illustration showcases a...
A whimsical birthday illustration showcases a...
Featuring a cozy room filled with balloons an...
Featuring a cozy room filled with balloons an...
In this charming illustration, a group of ant...
In this charming illustration, a group of ant...
An endearing scene with cartoonish animals ga...
An endearing scene with cartoonish animals ga...
People love us
See why over 10,000 cards were made in the last two weeks
What a breath of fresh air! Silly Robot Cards have bypassed any card manufacturer with their AI technology and card design(s) to capture the imagination and provide a platform to help produce truly personalised greetings cards. Not only that, there’s also human interaction with REAL people to respond to queries & requests providing real time help, assistance and support. A BIG high five to Silly Robots! 🙌 🤖
Hayley Quince - What a breath of fresh air!
Cool use of AI ... I think maybe Moonpig's days are numbered
Andy Baptist - Cool use of AI ..
What a great idea! You pick things that the person likes and this company makes an illustrated card including all the things you chose. So each card is unique to the person you chose it for. Brilliant idea. Card arrived, lovely quality. Happy buyer. Highly recommended.
Sue Blair - What a great idea!
I am absolutely thrilled to pieces with the valentines card I bought on this website, it is just too brilliant to put into words! Where other card websites failed Silly Robot Cards absolutely have come up trumps! I am so pleased. Thankyou so much!
Sarah Salt - I am absolutely thrilled to pieces
Frequently Asked Questions
How much does it cost?
It costs £3.99 to print a card.
Cards are printed on Glossy card and supplied with a paper envelope and a protective biodegradable OPP bag.
How long does it take for a card to arrive?
It takes 24-48 hours for a card to be printed and shipped.
Shipping options for the UK are as follows:
| Option | Courier | Price |
|---|---|---|
| Budget | Royal Mail 48 | £1.50 |
| Standard | Royal Mail 24 | £1.95 |
| Express | Royal Mail Tracked 24 | £6.24 |
| Overnight | DPD Local Next Day | £9.95 |
International shipping is also available.
What size is the card?
5.5 x 5.5 inches (140 x 140mm)
Can I personalise the card?
Yes, you can write a message on the inside of the card.
How do I send a card?
After generating your cards you can print a card to any address worldwide.
What quality is the card?
The card is a glossy card.
Supplied with a paper envelope and a protective biodegradable OPP bag.
What happens to my pictures after uploading?
All uploaded pictures are deleted within 30 days.
Environmental Impact
See how we're reducing our impact on the environment
Water-based inks
Printed using water based inks.
Sustainably sourced paper or wood
From sustainable forests.
Vegan-friendly
Contains no animal products.
Recyclable
Can be recycled.
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