110 of the Biggest, Boldest Celebrity Hair Transformations

Katie Holmes posted a dramatic Instagram photo— can you tell? She got a pixie cut. That's quite a change!

It's subtle, but it's something — she cut her long hair in October, bringing the length up to just past her collarbones.

Arguably *the* most dramatic hair transformation, Kate Hudson shaved her head and got rid of her signature blonde locks.

This summer, SJP wowed fans with a super dramatic change. However, her locks are now back to their signature golden hue.

The "Rise" singer has experimented with her hair a lot in recent years, ping-ponging back and forth between rainbow colors and her signature long, dark locks. But her most recent change might be the most striking yet – with her bleached-blonde, side-shaved, short cut, Perry looks like she could be Scarlett Johansson's doppelgänger now.

The short and super blonde (with dark roots) new look Wilde debuted on Instagram – and maybe-kinda-sorta accidentally copied from her pal Kate Mara – is a huge departure from the much longer and darker 'do the mom of two has had for the past several years.

After trying out an icy-blonde look in an Allure cover shoot, the actress was "nudged" to make the switch to a seemingly more subtle golden blonde. That's still a big change from her Girls character Marnie's always sleek and shiny dark brunette look.

The 2017 Golden Globe nominee, who is well-known for her fiery red locks, is a ging no longer!

Munn's extension-free hair didn't last long (literally less than two days) — she clipped them right back in for her appearance on The Late Show with Stephen Colbert.

J. Law showed up at the Madrid premiere of her new flick Passengers with extensions lengthening her platinum blonde hair, but she was back to her lob just two weeks later in Berlin.

OK, so this may not be a real haircut. But it's been a while since anyone has seen the singer without her long, bouncy extensions. It's definitely a refreshing look for Selena.

She's banging! Dewan-Tatum jumped aboard the bang train, following the lead of Jessica Biel, Chrissy Teigen, and Karlie Kloss.

The Girls actress received an updated look while wrapping up scenes as her mysterious yet simultaneously hilarious character, Jessa Johansson.

Mitchell opted for a honey blonde look this summer, but it didn't last long. She quickly went back to her black roots with a trim that made her a part of the lob squad.

OK, so, this may be a look Biel has rocked time and time again. But it's a whole lot of commitment to grow out and recut your bangs as much as she has. Kudos, Biel.

It's no secret that Nyong'o looks stunning with her signature pixie cut, but seeing her with beautiful braids is not upsetting, either.

Teigen debuted fresh fringe courtesy of Jen Atkin, celeb hairstylist, back in September.

Lovato changes her hair color as often as her shoes, if not more. Maybe she can't decide whether blondes actually do have more fun.

Roberts geared up for season two of Scream Queens with her fake long locks again. They almost look as fake as her character acts, amirite?