This post has not been vetted or endorsed by BuzzFeed's editorial staff. BuzzFeed Community is a place where anyone can create a post or quiz. Try making your own!
1. You guys stay in on Friday nights and have movie marathons.
2. She takes you cruising in her car, while bumping music.
3. She's not hesitant to drop the truth bomb on you.
4. Your sister tells you jokes that make you laugh uncontrollably.
5. You'd rather hang out with her than your actual BFF, which proves your sister has defeated all the friends you've ever had with her coolness.
6. If you share a room, every night is a sleepover filled with crazy adventures.
7. You gals share deep dark secrets that you wouldn't want anyone else to know.
8. You go on coffee runs every morning, afternoon, and night.
9. She teaches you sick dance moves for weekend party time.
10. And when you do party together... it's legendary.
11. She's there to catch you when you fall, and wipe a tear off your face.
12. She also supports you during job interviews, and major events in your life.
13. You guys aren't ashamed to devour the heck out of yummy foods.
14. She lets you borrow clothes if you can't find the perfect outfit for a night on the town.
15. If somebody doesn't treat you right, she'll take them down.
16. When this song comes on the radio, you don't think of your BFF from school… you think of your sister instead.
View this video on YouTube
"With a Little Help from My Friends" by The Beatles
17. You gals take enough selfies to fill two photo album books.
18. You have inside jokes that nobody else understands.
19. She checks in with you to discuss life and make sure everything's all right.
20. Your sister likes all of your Facebook statuses and pictures when no one else does.
21. And most importantly, she'll always be there for you... when the rain starts to pour.
Obviously you get into fights...
...but you quickly get over it because you can't imagine going a day without speaking.
Everyone is jealous of your friendship,
because nobody has the kind of sister–friend bond you two gals have.
Yay for sister-friends!
Share This Article
