Hats have definitely made a dynamic comeback and I'm really happy for this fact! Beside the necessity of wearing a hat,they make an outfit look complete and lay back. My personal favourites are fedora hats.
Here follows a sample of hats in action, as seen on the street and elsewhere!
The photos are from: http://lacooletchic.tumblr.com/archive, http://kayshacs.tumblr.com/archive,http://socialsurvival.tumblr.com/archive