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Sister birthday.
What to write.

Tell her one thing only a sibling would know, then wish her a good day. Shared history is what makes a sister's card.

These birthday wishes for a sister are sorted by who is writing. Pick your group, add a memory, then sign.

Create a cardRead a sample card

Everyone's words in one card.

Updated

A party outside. Hats on. The cake has waited long enough.

Happy birthday. You are still the first person I ring.

From Dev

Happy birthday. I will deny writing anything this nice.

From Ellen

You set the bar high and then helped me over it. Happy birthday.

From Ben

Pick a design

  • A plate of biscuits. Happy birthday. The good biscuits are out.
  • A set of car keys. Happy birthday. Still got it. Not sure where you put it.
  • Tasting the wine. We tasted six. We remember four. Happy birthday.
  • Blowing out the candles. Top of the pile for one day. Mind the wrapping.
  • Blowing out the candles. Small hands on a big cake. Happy birthday.
  • A cake. Happy birthday. Second slice is allowed. Third is between you and the fridge.
  • Stilllife birthday card. Happy birthday.
  • A party with balloons. Hold a balloon. Hold a friend. Happy birthday.
  • A mug. Happy birthday to the one who knows how everyone takes their tea.
  • A party hat. Happy birthday. The hat is not optional.

The question

Each writer gets a question.

One at a time, about Sam. They answer in their own words, or write without one.

Who they are to you
  1. Something Sam did this year that you still think about.
  2. Words of Sam's that you have caught yourself using.
  3. A day Sam made better just by turning up.
  4. Something Sam taught you without meaning to.
  5. A small thing about Sam that nobody else would notice.
  6. The story about Sam you tell most.
  1. The moment you knew you had a proper friend in Sam.
  2. Something Sam did that only a friend would.
  3. A thing you still laugh about together.
  4. The time Sam turned up when it mattered.
  5. Something Sam knew about you before you said it.
  1. Something Sam did for the family that went unsaid.
  2. A habit of Sam's that you have caught yourself copying.
  3. A memory of Sam from when you were younger.
  4. Something Sam put up with from you.
  5. Something Sam taught you, mostly by example.
  1. A small thing Sam did that you noticed and never mentioned.
  2. The moment you knew.
  3. Something Sam did this year that made things easier for you.
  4. A thing about Sam you would not change.
  5. Something Sam carried that was yours to carry.
  1. The thing you go to Sam for.
  2. Something you picked up from working beside Sam.
  3. A bad day at work that Sam turned round.
  4. Something a new starter should be told about Sam.
  5. Something Sam did that made the job feel worth doing.

Or write without one.

Birthday wishes for your sister

Pick your group, add one memory, and sign.

From a sister

  • Happy birthday to the person who knows everything and tells nothing. I love you.

  • We have shared a room, clothes and secrets. Happy birthday, sister.

  • Happy birthday. You are still the first person I ring.

  • To my sister: thank you for lending me your life as a rehearsal for mine.

  • Happy birthday. Mum is still your favourite and we both know it.

  • Another year of you being right about most things. Happy birthday.

From a brother

  • Happy birthday. I will deny writing anything this nice.

  • To my sister: you turned out well. Do not let it go to your head.

  • Happy birthday. Thanks for never telling Mum about the important things.

  • You are the best sister I have. Do not tell the other one.

  • Happy birthday. I mean every word of this card, which is rare.

  • Growing up with you was chaos. I would not change a day of it.

From a younger sibling

  • Happy birthday to the sister who let me tag along. I am returning the favour by being here today.

  • You set the bar high and then helped me over it. Happy birthday.

  • Happy birthday. I stole your clothes, your music and your friends, and I am sorry about one of those.

  • To my big sister: thank you for the path you cleared. It made mine easy.

  • Happy birthday. Being the younger one was the best deal in the family.

For a sister-in-law

  • Happy birthday. We are glad you married into this family, and gladder every year.

  • To a wonderful sister-in-law: have a lovely day. Lunch soon.

  • Happy birthday. Thank you for making my brother bearable.

  • Wishing you a happy birthday and a year as kind as you are.

  • Happy birthday. The family got better the day you joined it.

Funny

  • Happy birthday. You are older, I am wiser, and neither of us has changed.

  • Another year, and you still owe me five pounds from 2011.

  • Happy birthday. I would have got you a present, but I am your present.

  • You are my sister, which means I am legally allowed to say you look tired.

  • Happy birthday. Smile. The photos go in the group chat.

Short

  • Happy birthday, sis.

  • Have a great day. Love you lots.

  • Happy birthday. Proud to be your sibling.

  • Another year of you. The best.

  • Happy birthday. Cake is on me.

What to leave out

Do not bring up the old argument, even as a joke. Birthdays forgive a lot, but not that.

Do not write about her age if yours is close to it. She will do the maths.

Do not sign for the whole family unless they asked. Your message is yours.

One card from the family

Brothers, sisters, parents, the cousins. One link, and it opens on her birthday.

  1. 01

    Add her birthday.

    The card opens that morning and not before.

  2. 02

    Ask the family.

    Each person gets one link and writes once, in a browser.

  3. 03

    She reads it over breakfast.

    Every wish from the family, signed with a name.

Create a card

Questions

What should I write in my sister's birthday card?

One memory only the two of you share, and one wish for her year. Sisters keep the specific cards and recycle the generic ones.

How do I write a funny birthday message for my sister?

Tease her about something small and true, then say something kind. The kind part is what lets the tease land.

What do you write for a sister-in-law?

Something warm and short. You are not expected to know her childhood, so wish her a good day and sign with your name.

Is it odd for a brother to write a long card?

No. Short is the habit, but a few honest words from a brother are what she will remember.

Part of group birthday card.

More guides

Somebody has a day coming up.

Create a card

Everyone's words in one card.