She is known for her long dark locks which she occasionally mixes up by donning bubblegum-pink or bright blue hues.

But in her latest video to accompany her new single Part of Me Katy Perry is seen furiously hacking off her hair.

The 27-year-old transforms her luscious tresses into a messy boyish crop, which makes her look dramatically different from her usual girlie appearance.

Drastic measures: Katy Perry is seen hacking away at her hair in her latest music video

New look: Katy Perry was seen sporting a dramatically different haircut in the video for her new film Part of Me

Katy is also seen taping down her breasts and putting on a hooded jumper after deciding to join the marines following an emotional break-up from a boyfriend.

The video, which has a starkly aggressive tone, tells the story of a small town girl who gets her heart broken and channels her pain into tough physical training in the military.

But it appears that Katy may well have taken inspiration from one of Rihanna’s old videos.

From girl to boy: The singer is also seen taping down her breasts in a section of the film shortly after she hacks her hair off

Affirmation of strength: Katy Perry joins the Marines in the video for Part of Me, it’s an echo of her best friend Rihanna’s Hard from 2009

Super-sexy: Rihanna donned plasters on her nipples for her video, which wouldn’t be useful in a combat situation

While 24-year-old Rihanna’s military figure is super-sexualised (of course), Katy plays a small town girl who joins the Marines to deal with heartbreak over a cheating lover.

The blue-haired popstar is brunette in this video, but her protagonist hacks off her raven mane after seeing the object of her affections flirting with a colleague at work.

From then on in, it’s gritted perfect white teeth interspersed with an oddly jolly dance that’s spliced in between muddy, combat sequences.

Back in fatigues: Rihanna joins the military, this time for her new movie, sci-fi naval saga Battleship

Rihanna has climbed back into her fatigues for the movie Battleship, a sci-fi naval saga set to hit our screens next month.

Meanwhile Katy told MTV news tonight: ‘Well, I think that everybody can see that I love to take chances with my videos, and also have a lot of fun.’

Adding of the Ben Mor-directed video: ‘It’s an affirmation of strength, so I wanted to go the strongest route I ever could.

‘Literally, I was like, “I’m gonna join the service. I’m gonna join the Marines.”‘

Drastic: Katy hacks her hair off after seeing the sign up card for the Marines

Determined: Katy wanted to show a realistic portrayal of life in service

‘We used only Marines. … For three days, I was a wannabe Marine, which was so difficult.’

The video was shot over several days in February at the Camp Pendleton Marine Corps base in Oceanside, California.

Katy threw herself into the boot camp: ‘Those people work hard and work out.

Bringing out the big guns: Katy in action in the video

A different side: Katy wanted the video to be different, and it certainly is

Physical: Perry tries to who the gritty reality of service, but doesn’t ditch her lipstick

‘I learned how to flip someone. I learned how to flip them on their back. I learned how to wrestle underwater,’ she said.

She added: ‘I just love it and I think people really respond to it,’ she said. ‘People can catch the BS … and I just wanted to really go for it.’

Part of Me is the lead single off Perry’s Teenage Dream: The Complete Confection, out March 26.

Battleship is in theatres across the UK from April 11 and US May 18.

On the move: Today Katy left her hotel in Paris to make her way to Berlin