Rihanna’s first movie role revealed: You won’t believe what she did to her hair and wardrobe (video) – Full video below

She’s clearly a woman of many talents.

Fresh from her hit Last Girl on Earth tour and a sixth number one U.S. single, Rihanna is now turning her hand to acting in her first big movie role.

And the 22-year-old looked almost unrecognisable on the Hawaiian set of her new film Battleship.

Decked out in camouflage trousers, black boots, baseball cap and black T-shirt, the singer’s hair was also cropped shorter, and is back to its usual shade of brown.

Rihanna, who plays a naval officer in the forthcoming movie, has been sporting bright red hair in recent months.

She also showed off a multitude of tattoos on both arms, and at one point did not appear too happy to spot a photographer on the scene.

Battleship, loosely based on the popular board game,  follows an international fleet coming together to save earth from alien invaders.

It also stars True Blood actor Alexander Skarsgård and Friday Night Lights star Taylor Kitsch as fellow naval officers along with model Brooklyn Decker.

It is slated for release in 2012.

No details have been released about Rihanna’s character, although yesterday, she was wearing a name tag with the label ‘Raikes.’

And it seems the singer is enjoying herself, according to her Twitter account.

HAWAII…Hawaii…hawaii……who wouldn’t want to work here for 2 weeks,’ she tweeted, posting a photo of herself on a balcony.It’s not clear if the star’s baseball player boyfriend Matt Kemp is joining her at any point during the Hawaiian leg of filming.

Billboard announced last week that Rihanna is tied with Mariah Carey, Lady Gaga, and Beyonce for the most number one songs on the pop airplay chart.

Her song Love the Way You Lie – a collaboration with Eminem, is still number one in the U.S.