Most Helpful Guy
It totally depends on the facial structure of the girls face and the glasses she's wearing. As others have said, this can make her hot as hell or the ugly duckling. It's just like any makeup, jewelry, clothes, etc... there's the potential for both extremes of attractiveness. Show us a picture of you with and without your glasses. Then you'll know for sure... for YOU.
More importantly... do you need glasses? If you need them, then it's more about finding the ones that do looks sexy on your face. It's stupid to not be able to see for the sake of looks... when you can look good with the glasses you need anyhow. On the other hand, I've heard of girls wearing glasses when they don't need them... because they think they look better. That's just as silly.
It's all relative to YOU, your face, and your choice of glasses. Let's see what you got.
Either way... you need to rock what you've got!