05/20/2012 11:12 am ET

This Week In Beauty: Cannes Film Festival 2012 Updos vs. Free-Flowing Locks (PHOTOS)

We spend each week scouring the red carpets for the best (and worst) in beauty, from gorgeous coral lips to oddly lopsided hair.

But this week we barely needed to scour at all: it's Cannes, people! Red carpets abound!

So for today's This Week In Beauty, we're honing in on our favorite Cannes glamour girls (Frieda, Jessica, Eva) and talking about hair. With multiple premieres and parties a day, celebs are trying out more hairstyles in a week than we do in a year.

So which styles work best: sleek updos or free-flowing locks? Vote in our slideshow below.

Cannes 2012 Hairstyles