Summer's Hottest Hats

Not just for bad hair days, the toppers Jessica Alba, Ashlee Simpson and more wear keep them looking and feeling cool

FERGIE

Why we love it: Because no one else is going to be wearing a hat like this – and don't you want to be unique?
Where we'd wear it: To a rooftop pool party at a fancy hotel (or, you know, an in-ground pool at a friend's house)