It's quite obvious just what drew the attention of the casting director.

And The Hills star Heidi Montag is not one for keeping her assets under wraps, especially as she's filming a cameo in her first feature film.

Dressed in an outfit that can only be described as scanty, the platinum blonde reality star famous for her plastic surgery s making the most of her 15 minutes of fame.

If the 23-year-old was nervous at the prospect of starring alongside Hollywood luminaries Nicole Kidman and Jennifer Aniston, she didn't show it.

Heidi's got talent? The pneumatic blonde made her big screen debut as she filmed a cameo in a new film at El Matador Beach in Malibu, California

No acting lessons required: Heidi pouted and preened her way through the filming

It is still unclear what role Heidi takes in this movie, but she confidently thrust her chest out in a low-cut polka dot top, with red bikini top on show and pouted and preened her way through the filming.

An excited Heidi tweeted: "I just had THE BEST day of my life filming my first comedy movie!!!!! It was beyond what I could have ever dreamed!!!!!"

What's my motivation? Heidi prepares to film a scene with a cast member

And in another she wrote, "And I am wearing my sailor shorts I designed in the movie!!!"

Originally titled Pretend Wife, Just Go for It follows surgeon Adam Sandler who convinces a single mother (Jennifer Aniston) to pretend to be his soon-to-be-divorced wife so that he doesn't lose the woman he loves.

Sports Ilustrated model Brooklyn Decker will star as Sandler's love interest.

Quite what Aniston and Kidman think of their castmate is as yet unknown.

Ready for her close-up: Heidi's role in the film is unclear but she clearly wants to be the main attraction in the film which will also star Jennifer Aniston

Meanwhile Heidi's loose cannon husband Spencer Pratt has been ordered to leave The Hills and get anger management following an outburst on set, according to US reports.

UsWeekly.com claims the show's bosses kicked the 26-year-old newlywed off the show after he lost his temper during filming.

A source said that Pratt recently 'flipped out' on set after a female producer made a request to which he objected. It's not clear what the request was for.

'He got so crazy that he screamed at [her], 'I should kill you for even asking me to do that!"" the source said.

Team effort: The production team on hand for Heidi's debut

Staff members were reportedly 'very rattled' by Pratt's threats and complained to top producers who then threatened to kick Pratt off the show.

Pratt's team then went back with a compromise.

'The show agreed that Spencer would leave The Hills for six weeks to do anger management training once a week at home. If he completes it, he can return to the show.'

It comes days after Montag announced that she had ditched her husband as her manager.