1. She's always (usually) right.

2. She's the only one who cares enough about you to tell you the truth.

3. She'll keep secrets that need to be kept.

4. She'll give you presents even when she can't afford it.

5. She's made all the mistakes already so you don't have to.

6. She's pretty.

7. She'll teach you how to straighten your hair.

8. She listens. Even when you've already said it a million times.

9. She's funny, especially when she does her little dances for no reason at all.

10. She has yummy smelling moisturizer you can steal when she's not looking. Or now that you're grown up and don't do stuff like that anymore, you can buy it here on the My Sister Says website. : )