Me and my best friend look so similar and i HATE it?

Me and my best friend hav grown up together, often having people mistake us for sisters or even twins. It didnt bother me when i was younger, but now that im a teen i find it annoying for when it comes to guys, as any one would..i want to be seen as the prettier one. Its awkward how we look so much alike....one time a guy mistakeably asked out Carmen when he actually liked me. Worked out in the end though. Sometimes, i feel as if i want to move so i can just be my own person, for wer NOT sisters...even thought id hate to loose our friendship. Ive tried having different looks but it dosnt seem to work i thnk i need somthing more drastic. Any ideas?