The Most Dramatic Celeb Hair Switch-Ups Ever

What if you could shock the world and get your name trending just by changing your hairdo? These celebs know how it feels! Check out their craziest hair swaps.

Super-model Coco Rocha has swapped up her color quite a bit, but she just debuted a major chop!

With cheekbones like that, you can do anything!

Beyonce goes back and forth between curls big and small, but her hair is usually very long and big regardless.

Until now! We are loving the blonde pixie she's got these days.

Jessie J was always easily recognized by her jet-black, blunt bangs and ends.

The British singer shaved her head in March 2013, raising more than half a million pounds for charity in the process.

Rachel McAdams is another gal who loves to experiment with colors, like her punky pink streaks after The Notebook.

Her rich, coppery red hair looks totally natural with that porcelain skin!

Tia Mowry says she "cried" after getting her pixie cut in fall 2012, and her newest hairdo is even more shocking!

She's now rocking a chic long bob in a golden blonde color!

Anne Hathaway famously shaved her head to play the doomed Fantine in Les Mis (and earned an Oscar for it!), and she's been rocking a cute pixie ever since.

At the very dramatic Met Ball, she unveiled a very dramatic dye job.

Throughout her Dancing with the Stars, Julianne Hough had long, gorgeous blonde hair.

New year, new look: She chopped her hair into a cool, chunky bob shortly before her break-up with Ryan Seacrest (break-up hair, perhaps?).

First Lady Michelle Obama is scrutinized every time she leaves the house, so you better believe people notice her hair!

Her bangs debuted to major fanfare before the inauguration, but she only kept them for around four months.

One girl who can never tear herself away from her bangs? Carly Rae Jepsen. But that doesn't mean she can't switch it up...

We are loving the bold, warm brightness of Carly's red hair this summer!

Michelle Williams has been rocking the blonde pixie for quite some time, though we've loved her solution for the growing-out stage...

For such a sweet Brooklyn gal, she sure can work a punk-rock asymmetrical 'do.

Jennifer Lawrence's thick gold-blonde hair sends women straight to their colorist with tearouts.

Her recent chop, however, shows off that color beautifully.

Dianna Agron has made social-media tongues wag in the past by posting a pic of a dramatic bob haircut in process.

These days, her skin is taking beautifully to a red-hot hue.

Dakota Fanning seems like a very good girl, and her simple, blunt blonde hair reflects that fact.

Until! These pink tips are very bad-*ss, miss.

After going shorter and shorter since her long, streaky Hannah Montana days, Miley Cyrus gave us the mother of all celeb haircuts.

We are still recovering from this look, but never has a haircut done more for a star's image.

Rihanna is known for changing up her hair with every new album—remember the fire-engine red color for the Loud time period? She recently switched to a drastic gray color that she called "Brrrr."

Her gray color only lasted a few weeks, when super-short curls came along. We likie!