Sisters are probably the most competitive relationship within the family, but once the sisters are grown, it becomes the strongest relationship.
I smile because you're my sister I laugh because you cant do anything about it.
You aren't just my Best Friend. You are my sister and I love you to freaking death. I don't know what I would do without you.
People come and go, friends change like the weather but I know my sister is here forever. I love you.