Best online shops for European fashion in America?

I know very little about fashion and I'm not even a huge fan of shopping, but I'm going insane looking at the same clothes every day in my closet. I would really like to revamp my style. I think I tend to enjoy more classy feminine styles that are still a little sexy. Seems to fit in more with European styles, but I can't find many shops that have that in the US. Does anyone have any recommendations?