While I was in Hawaii I picked up these pair of Carrera glasses. The original racing glasses, they are super light weight so you can wear them all day and also they fade to clear along the bottom, so you dont need to take them off to look at things!
I want to invest in a black pair but there are a few nice shapes being thrown around right now.
I am quite lucky that I can wear just about any shape of glasses but my shape of choice is definatly the aviator. I think I like them because you can dress them up or down easily unlike other shapes. Aviators also come quite low so they can hid even the most wicked bags!!!