What do you suggest for a 21 years old girl wearing?

[black glasses frames]

Nowadays, there are mountains kinds of eyeglasses frames on the market, such as those stainless steel, bendable titanium, pure titanium and plastic eyeglasses frame material, the manufacturers started a lucrative business but the products were not very comfortable and didn't have a sophisticated look, in my opinion, when choosing eyeglasses, fashion, style and elegant are the three most important factors, what do you suggest for a 21 years old girl wearing? I don’t mind if shopping online.
Thank you!