The birthday girl's hottest hairstyles of all time.

Flowing curls, bright blonde waves and more.

Two decades worth of dazzling 'dos from the newly engaged singer.

Hot hair trends from long curls to ombre hues.

From chic accent braids to haute highlights.

From haute highlights to lovely layers, check out the best in celeb hair.

The year in hair for the most versatile style chameleon of our time.

Sleek updos, haute highlights and more.

From blonde highlights to bold bangs, here are the trends that rocked our 2012.

Check out the ever-evolving tresses of one of our favorite curly girls.