1) If someone listened in on our conversations they would think we were crazy

Plenty of times my sister and I will be hanging out and I think to myself, omg we're crazy, but I love it! My sister is the only one person I can 100 percent be myself around. I have the most fun when I'm with her and we're both just as crazy as each other, so yes we're weird, but it works!

2) We can be brutally honest with each other and not get mad (sometimes)

If she hates my outfit that day, she'll tell me and vice versa. We need someone like this in our life, and and I know that I can turn to my sister to give me the best advice. She tells me when my makeup or outfit looks bad, but she also tells me when she loves my look, and that is the greatest compliment ever.

3) We always have each others backs

Yes we fight like cats and dogs, but the minute someone else says something bad about my sister, look out. Being the older sister doesn't always mean I only look our for her, she looks out for me too. We can call each other the worst names in the book, but the second someone else says something bad about the other, we can be fierce.

4) We grow closer with age

When my sister and I were growing up and even in high school we used to fight so much. It would get to the point of tears and we wouldn't talk to each other for a whole day. We would fight over the silliest stuff too, I can't even remember what our arguments were about! Now that we're older, and I'm away at school, and my sister will go away to school in the fall, we rarely fight and we spend as much time together as we possibly can. We love each other when we were younger up until now, but we don't fight as often because it feels silly to us now.

5) She knows me longer than any of my other friends

I have some friends that I have known for a pretty long time, but being best friends with someone since birth guarantees that you know that person, sometimes even better than you know yourself.

6) I laugh the hardest will my sister.

No one can make me laugh harder than my sister does. She just knows how to make me laugh at any moment of any day. When I'm with my sister, I get an automatic ab workout.

7)She's always up for a last minute adventure

When we're both home over the summer, bored with nothing to do, we are always trying to think of fun things to do, and they are usually last minute!

8)Double wardrobe!

My sister and I are the same size which means my closet is doubled at all times. When we get sick of our own clothes, I make my way to my sisters closet, which usually has cooler outfit options than mine.

9) Someone to stay up late and just talk with.

"Let's stay up and watch a movie!" turns into talking about random things until you both fall asleep, and you wouldn't have it any other way

10) You'll always be there and so will she

You know you have her to count on in tough situations, happy ones, and everything in between.