The first one doesn't sound all incorrect to me. Anyway, I agree that saying вы очень красивы is at least a bit better.
It probably doesn't sound incorrect, but, according to current grammar rules, it is.
Antonio1986, let me blow your brain a bit more. If you want to ask a woman, whether she's the only one, who wants an ice cream, you would say:
"Вы одна (!) хотите (!!!) мороженое?"