How Well Do You Know Your Sister?

Take this quiz to find out!

Having a sister = having a built-in best friend. But how well do you know her, actually? Are you the #1 expert on all her lore and an A+ sister, or are you two not so close?

Just answer these questions, starting with easier facts and working up to harder ones, and we’ll tell you if you know your sister better than she knows herself. You can even send this quiz to her afterwards to see if she can beat your score!

An illustration of two sisters high-fiving.

Quizzes Are More Fun With Friends

Share this quiz with your friends and compare results.

Questions Overview

1. Do you know what year your sister was born?
  1. Yes, obviously!
  2. Yeah—it took me a sec to remember it, but I do.
  3. This is embarrassing…but I forgot.
2. Do you know your sister’s favorite color?
  1. Yes, of course!
  2. I think so (as long as it hasn’t changed recently!).
  3. No, I don’t.
3. Do you know your sister’s best friend’s name?
  1. Yup! And I’m friends with them too.
  2. I think so! I just need a minute to remember it.
  3. Nope, it’s totally slipping my mind right now.
4. Do you know what her #1 favorite food is?
  1. Lol, yes. I make it for her a lot.
  2. I think so! There are a few I have in mind.
  3. No, I have no idea.
5. Can you name your sister’s celebrity crush?
  1. Yup! And she also knows mine.
  2. Maybe—I could take an educated guess!
  3. Nope, I have no idea 😬
6. Can you name your sister’s favorite musician or band?
  1. Yes! We talk about them all the time.
  2. I could name a few, but I don’t know who her #1 is.
  3. No. I’m not sure what she listens to these days.
7. Do you know your sister's go-to comfort TV show when she feels sad?
  1. Yes! We actually watch it together all the time.
  2. I have a few guesses, but I can’t narrow it down.
  3. Honestly, I don’t know.
8. Can you name a book or movie that’s had a major impact on your sister’s life?
  1. Yes! I could name tons.
  2. I think so…I just need a second to think.
  3. No, I don’t think I can. 🥲
9. Can you name the achievement that your sister is most proud of?
  1. Definitely! And I’m so proud of her too. 🥹
  2. I could name a few, but I don’t know which one is her #1.
  3. If I’m being honest, I can’t.
10. Do you remember the name of your sister’s favorite stuffed animal from when she was little?
  1. Yup, of course.
  2. Give me a second… It’s in my brain somewhere!
  3. Nope, I totally forgot.
11. Do you know the name of your sister’s boss (if she’s an adult) or the name of her favorite teacher (if she’s still in school)?
  1. Yup, she’s told me about them.
  2. I’m not certain, but I could make a good guess.
  3. Nope, I’ve got no idea.
12. Do you know what your sister’s biggest fears are?
  1. Of course! We talk them out all the time.
  2. Kinda—she’s hinted at them.
  3. No, we don’t really talk about that kind of thing.

More Quizzes

Did you like this quiz?

Fun Facts About Sisters & Siblings

  • About 80% of Americans have a sibling.[1]
  • A study at BYU found that having a sister leads to better mental health. Sisters protect siblings from feeling lonely, unloved, self-conscious, or fearful.[2]
  • Another study found that having a younger sister makes boys more agreeable.[3]
  • Research also shows that older sisters play an important role in raising younger sisters, and they often serve as confidantes and sources of support.[4]
  • The best predictor for whether or not siblings will get along is whether the older sibling learned how to play well with other children before their younger sibling was born.
  • Later in life, sister-sister sibling pairs tend to have the closest relationships and spend the most time together (compared to sister-brother or brother-brother pairs).
  • For many people, the sibling relationship is the longest and most consistent relationship in their lives, lasting far longer than the parent/child relationship or a relationship with a romantic partner. With this in mind, it’s clear that sibling relationships are pretty important and influential![5]

Want to learn more?

You Might Also Like

References

  1. ↑ https://news.asu.edu/20250407-health-and-medicine-science-sibling-dynamics-why-we-fight-how-we-relate-and-why-it-matters
  2. ↑ https://news.byu.edu/news/sisters-give-siblings-better-mental-health-study-shows.
  3. ↑ https://www.sciencedirect.com/science/article/pii/S0272775719307344
  4. ↑ https://munewsarchives.missouri.edu/news-releases/2013/1015-sisters-serve-as-confidants-sources-of-support-and-mentors-during-intimate-conversations-mu-researcher-finds
  5. ↑ https://greatergood.berkeley.edu/article/item/how_your_siblings_can_make_you_happier