1. tbf
  2. group birthday card
  3. Birthday wishes for cousin sister

Birthday wishes for
cousin sister.

Write the thing only a cousin knows. One shared memory, one line about who she is now, and happy birthday.

Lines below are sorted by how close you are and who is signing. Pick the group that fits, change one detail so it is true of her, and sign it.

Create a cardRead a sample card

Everyone's words in one card.

Updated

A speech bubble. Happy birthday to our favourite person in the group chat. Don't tell the others.

You were my first best friend before I knew what that meant. Still true.

From Dev

Glad we found each other properly as adults. Happy birthday.

From Ellen

The whole family sends love today. You deserve every bit of it.

From Ben

Pick a design

  • Marker lettering with a highlighter stroke. Happy birthday. You still can't fold a fitted sheet and that's fine.
  • A birthday present. Happy birthday. Open it before the tea cools.
  • Two-colour printed lettering. Happy birthday. Yes, there's cake. No, you don't have to speak.
  • Sitting with a friend. Same spot as always. The squirrels saved our place.
  • Tasting the wine. We tasted six. We remember four. Happy birthday.
  • A wrapped present. Happy birthday. It's a big one. Well, medium.
  • Celebrating. Confetti in the carpet till Christmas. Worth it.
  • A big ice cream. Your usual, in the biggest cone they had.
  • Balloons. For the walk home. Something bright to carry.
  • Cutpaper birthday card. Happy birthday.

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.

Lines for her card

Pick one, make one detail yours, and sign it.

Grew up together

  • Happy birthday. Nobody else remembers that summer the way we do, and I am glad it is you.

  • We have been cousins since before either of us had a say in it. Best accident of my life.

  • Happy birthday to the person I called when I needed someone who already knew the whole story.

  • You were my first best friend before I knew what that meant. Still true.

  • Happy birthday. The years change everything except us, which is the best part.

Close but not childhood-close

  • Happy birthday. Every family gathering is better when you walk in.

  • You are the cousin I wish I had grown up closer to. Making up for it now.

  • Happy birthday. You have a way of making everyone in the room feel like they matter.

  • Glad we found each other properly as adults. Happy birthday.

  • You are exactly the kind of person this family needed. Lucky we got you.

From the whole family

  • Happy birthday from all of us. You are the good bit at every reunion.

  • The whole family sends love today. You deserve every bit of it.

  • Happy birthday. The table is louder when you are at it, and we mean that kindly.

  • From everyone who shares a grandmother with you, happy birthday.

Funny

  • Happy birthday. As the cousin who knows where all the bodies are buried, I wish you well.

  • We share DNA and a mutual fear of Aunt Margaret. Happy birthday.

  • Happy birthday. You are the proof that genetics can be kind occasionally.

  • Still annoyed you got the height. Happy birthday anyway.

  • You are my favourite cousin, and yes I have told the others the same thing.

Short

  • Happy birthday, cousin. So glad you exist.

  • Happy birthday. Love you more than I say.

  • Happiest of birthdays. You deserve a good one.

  • Happy birthday. Here is to many more of them.

What to leave out

Do not write something that could go on any cousin's card. If nothing in the line could only be true of her, it is not worth the ink.

Avoid anything about age as a number to dread. She knows how old she is.

Do not mention family drama, old falling-outs, or anything she did not choose. The card is read on a good day. Keep it that way.

Skip the long list of wishes. Pick one thing to say and say it properly.

One card from everyone who loves her

Family in different cities, friends she has collected along the way. One link, and it is there when she wakes up.

  1. 01

    Set her birthday as the open date.

    The card sits closed until the morning it matters.

  2. 02

    Send the link to everyone signing.

    Each person writes their own line, in their own words, from a browser.

  3. 03

    She opens it on the day.

    Every name, every line, all in one place.

Create a card

Questions

What do you write in a birthday card for your cousin sister?

Name one thing that is true of her and only her. A shared memory, a quality you admire, or a joke that needs no explanation.

How do you make a cousin's birthday message feel personal?

Use a detail only you would know. The city she moved to, the thing she always orders, the year you finally got close. Generic warm words are easy to spot.

Can the whole family sign one card?

Yes, and it is easier online. One link goes to whoever you want to include, and the card opens for her on her birthday with every name on it.

Part of group birthday card.

More guides

Somebody has a day coming up.

Create a card

Everyone's words in one card.