Who is that? One of Australia’s most successful models has had a hair transformation so drastic, even we didn’t recognise her at first.

Australia’s Next Top Model mentor, Cheyenne Tozzi, has traded in her light blonde hair for dark chocolate locks this week. The 26-year-old, who has been living in Paris recently focusing on her burgeoning music career, took to Instagram to debut her new ‘do.

Who IS that? (Image via Instagram @CheyenneT)

Who says it's mandatory to go lighter in spring, anyway?

She's not the first celeb to make the transition from blonde to brunette this year. We've also seen similar transformations from Cara Delevingne and Sienna Miller.

We're used to seeing Cheyenne with light blonde hair. (Image via Instagram @CheyenneT)

Which has us thinking - maybe brunettes have more fun after all?

She's the epitome of Parisian chic, and we love it. (Image via Instagram @CheyenneT)

The model-turned-singer is in Melbourne for the show's first round of auditions, which is set to air in 2016. So we can all look forward to seeing a lot more of Cheyenne's new hair on our TV screens soon.

Did you recognise Cheyenne with her new dark 'do?

The best celebrity hair transformations

January Jones

January Jokes

Giuliana Rancic

Giuliana Rancic

Cara Delevingne

Cara Delevingne

Kim Kardashian

WOAH. Kimmy K shocked us all when she bleached the bejeezus out of her naturally ebony hair. The process reportedly took several hours.

Rachael Finch

Rachael Finch. Shorter, lighter - we love the former Miss Universe Australia's new hair.

Jesinta Campbell

Giuliana Rancic

Mindy Kaling

Lady Gaga

Sam Frost

Nicole Kidman

Rita Ora

Kylie Jenner

Kim Kardashian

Kerry Washington

Tammin Sursok

Nicole Ritchie

Julia Roberts.

Mindy Kaling

Mindy Kaling.

Nicole Ritchie

Audrina Patridge

Sia Furler

Kate Bosworth

Cara Delevingne

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