Heroes star Ali Larter gave her super powers a rest during an afternoon at Malibu beach yesterday.

The actress, who plays Niki Sanders in the hit series, frolicked on the sand in a black string bikini, accompanied by her fiancé actor Hayes MacArthur.

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Super body: Heroes star Ali Larter in Malibu yesterday

The 32-year-old put her carefully honed body on show, and admits she's proud of her hard-earned physique.

She told Allure magazine: 'When I'm in really good shape, I like my butt. It's juicy - that's what my fiancé says.'

Body of work: The actress with her fiancé Hayes MacArthur

But she hasn't escaped Hollywood's obsession with size zero, revealing that she was once told to shed some pounds while shooting a movie.

'The faxes went out from the producers and the director to my agents to my manager to call me and ask me to lose weight,' she says.

Leading lady: Ali is set to star in the upcoming thriller Obsessed

'I just remember sitting in my trailer hysterically crying from the embarrassment I felt about myself, my body – and that no one could talk to me directly.'

However, she doesn't expect much sympathy, adding: 'This is what I signed up for. What I do for a living puts me in the spotlight. They pay me for it.'

The star is set to feature in the upcoming thriller Obsessed alongside Beyonce Knowles and Idris Elba.