Hollywood's Most Buzzed-About Beauty

The set the blogosphere ablaze when she changed up her hair to fire-engine red.

The mom to two followed her nesting instincts in the most glamorous way possible, piling her hair into a sky-high chignon that some readers loved – and others deemed strictly for the birds.

Taking a hairpin turn off the standard Hollywood road to beauty, Williams cut her long hair into a short pixie style that got readers buzzing.

After perplexing fans for months with an ever-growing – and occasionally beaded! – beard, shaved off his grizzled thatch and time-traveled back to his formerly dapper self.

Who loves the ’80s? sprayed-to-stay coif reintroduced the term “helmet head” to a whole new generation.

You can wash that man right out of your hair! Love Hewitt lopped off her long hair into a saucy bob after splitting with boyfriend Jamie Kennedy.

Forget PDA tattoos! Love was in the hair for the Hills star, who shaved the initial of his ladylove into the side of his Mohawk.

There’s not a lot that can do to shock and awe anymore – but turning her platinum locks gray certainly got fans talking.

With her extensions tangled up in jail rules, was allowed to head to the slammer with her longs locks intact. Whew!

Rocking an abundance of smoldering shadow, the Mad Men star put a high-fashion spin on a masked marauder’s style.

After enduring a 20-hour makeover, traded in what some dubbed a "reverse mullet" for extra-long extensions.

Snooki’s boyfriends may come and go, but her one steady has always been her signature pouf. The reality starlet stayed true to the same bumped-up style from the Jersey Shore to Miami Beach and back.

The pixie even made its way to Dixie! The debuted her short cut exclusively to PEOPLE.com readers, saying, “It was so damaged I looked like a scarecrow so I chopped it off!

Sharing her in-flight fun, took to Twitter to unveil a series of shots of her in wigs – including this one, which her BFF hairdresser Ken Paves dubbed “Aunt Sally.”

The Entourage star left fans divided when he traded his signature curls for a closely cropped cut.