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.

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A whimsical birthday illustration showcases a pair of adorable kittens playfully tangled in a string of colorful party lights, with one kitten wearing a tiny party hat. The scene humorously depicts the 'funny sister' sentiment as one kitten gently boops the other's nose. Above them, 'Happy Birthday' is spelled out in dangling letters, adding to the festive atmosphere.
Generated with these themes: funny sister  .
Made with ❤️ by AI.

A whimsical birthday illustration showcases a...

A whimsical birthday illustration showcases a...

Featuring a cozy room filled with balloons and streamers, the illustration depicts a girl in a superhero costume with a cape labeled 'funny sister', leaping joyously as she startles her sibling, who is holding a birthday cupcake. The phrase 'Happy Birthday' is prominently displayed on the wall in bold, cheerful lettering, enhancing the playful theme.
Generated with these themes: funny sister  .
Made with ❤️ by AI.

Featuring a cozy room filled with balloons an...

Featuring a cozy room filled with balloons an...

In this charming illustration, a group of anthropomorphic forest animals throws a surprise party with the 'funny sister' being a bear dressed in a clown outfit juggling honey pots. The festive scene is complete with woodland decorations and a sign hanging from the trees with the text 'Happy Birthday' framed by twinkling fairy lights.
Generated with these themes: funny sister  .
Made with ❤️ by AI.

In this charming illustration, a group of ant...

In this charming illustration, a group of ant...

An endearing scene with cartoonish animals gathered around a cake, where a jovial elephant dressed in a pink tutu represents the 'funny sister' role, attempting to balance on a tiny stool. In the background, a banner with the text 'Happy Birthday' sways, complementing the laughter-filled party ambiance.
Generated with these themes: funny sister  .
Made with ❤️ by AI.

An endearing scene with cartoonish animals ga...

An endearing scene with cartoonish animals ga...



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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 ..

I love this concept. My boyfriend made me a card which I loved. The quality was great too. I have now sent Christmas cards to all my loved ones, I can't wait for them to receive them.

Chiara - The cutest personalised cards

Really creative and original - like that it’s gives you multiple options

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Frequently Asked Questions


How much does it cost?

It costs £3.99 to print a card.

Cards are printed on 324gsm Mohawk 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:

OptionCourierPrice
BudgetRoyal Mail 48£1.50
StandardRoyal Mail 24£1.95
ExpressRoyal Mail Tracked 24£6.24
OvernightDPD 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 324gsm Mohawk 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.

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Environmental Impact

See how we're reducing our impact on the environment


Water-based inks icon

Water-based inks

Printed using water based inks.

Sustainabily sourced icon

Sustainably sourced paper or wood

From sustainable forests.

Vegan-friendly icon

Vegan-friendly

Contains no animal products.

Recyclable

Can be recycled.



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