How to cope with a much prettier friend
There are 3 solutions to this problem
Remember beauty is in the eye of the beholder. We are all beautiful in our own way remember that.
She's your friend you're not competing with each other, I'm sure she wouldn't want you to feel that you have to "cope" and she'd probably be really horrifiend to find out that's how you felt.
People who love you, love you for you so hold your head up high, shoulders back, smile, know you are fabulous and go do your thing sweetie!
Looks are an accident of birth and genes - your friend didn't become prettier just to spite everyone else. And there's probably something about you that your friend wishes she had more of (intelligence, kindness, patience, etc.)
Keep in mind those things that you do have in common with your friend.
I agree with Jillaroo95 - enjoy it - people are often drawn to beautiful people to discover their 'ordinary' friends are beautiful as well but maybe in a different way - you may meet more people - who knows!