I'm jealous of my best friend, help?

It's strange, because it's never bothered me before. I've always known that she's prettier than me - she's tanned with thick, long, wavy hair, and she has the perfect body, while I'm pale with stick-straight hair and tall and lanky. Her skin is acne-free, and every guy she meets is all over her because she's so outgoing and friendly. It doesn't help that we always go for the same boys, with her always getting the one we both like. Her family is also extremely rich. I'm not one to be self-conscious usually, but I find myself getting angry and insecure whenever I'm around her now. I feel like my jealousy is going to ruin our friendship. I love her and she's one of my favorite people in the world, but I hate the way I feel around her so I've been trying to distance myself from her. Any suggestions on how I can get over this? I just want everything to go back to the way it was.