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Birthday cards · For sister

Birthday cards for your sister

Sisters are your first best friend and your first rival, often on the same day. A HeartCraft birthday card lets you say the soft stuff without having to say it to her face: balloons, candles, a cake, a few photos from your childhood and your letter at the end.

You’ll make it in our birthday editor, birthday.myheartcraft.com.

Cute & Sweet is soft and full of hearts, Bestie is loud and playful for sisters who are basically best friends, and Sky Lanterns is dreamy and sentimental — lovely if she lives far away now.

Whether she is your didi, your little sister or your sister-in-law, send it on WhatsApp in the morning or drop it in the family group for everyone to see.

Our picks for your sister

See it before you make it

A few seconds of what they’ll see when they open it. Tap play; nothing loads until you do.

  • Cute & Sweet · Playful pinks, teddies, hearts and a gift to unwrap.

  • Bestie · Loud, fun and full of inside jokes, for your best friend.

  • Sky Lanterns · Dreamy and starlit, with lanterns to release.

What to write to your sister

  • Happy birthday to my forever partner in crime. Thanks for keeping all my secrets (and only using a few against me).
  • Didi, you were my first role model and you still are. Happy birthday!
  • To the little sister who stole my clothes and my heart — happy birthday.

Frequently asked questions

Can I add old childhood photos?

Yes. Photograph old prints with your phone and add them — they appear as moments before your letter, which is usually where the happy tears start.

Which design is best for a sister?

Cute & Sweet for a soft, affectionate card, Bestie if you are basically best friends, and Sky Lanterns for something sentimental, especially when you live apart.

Can I send it to my sister abroad?

Yes. It is a link, so it opens anywhere in the world, and international payments are supported with local pricing.

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