21/08/2012 03:31 BST | Updated 20/10/2012 06:12 BST

Kelly Brook Reveals That Stripping Off For Keith Lemon Movie Was 'Horrendous', But She Did It... (Premiere Pics)

Kelly Brook confessed she still gets nervous about appearing scantily clad on camera as she attended the premiere of funnyman Keith Lemon's risque new film.

Kelly Brook still gets nervous - apparently

The actress and model, who regularly poses for photo shoots in lingerie and swimwear, wears skimpy underwear, suspenders and a revealing bikini during the comedy.

Dressed in a figure-hugging lace gown for the premiere in London's Leicester Square, Brook said: "It's horrendous, I didn't know I'd be doing that but he got everyone doing all sorts."

Brook plays herself in the movie, in which the moustachioed star finds fortune after inventing the Lemon Phone - a bog-standard mobile phone with a lemon stuck on it.

Kelly Brook with Keith Lemon and Laura Aikman at the London premiere of Keith Lemon's self-titled Movie

"We all just wanted to do a film with him. He's just funny, isn't he, there's no one like him," she said.

"He's crazy. He never sticks to the script, he always comes off the script so you never know which way he's going to go and you just have to keep a straight face."

Lemon - the alter ego of entertainer Leigh Francis - managed to secure cameos from names such as Gary Barlow, Ronan Keating, David Hasselhoff and ITV2 Celebrity Juice co-stars Fearne Cotton and Holly Willoughby.

Dressed in a white suit with feather wings for the Odeon West End premiere, he said: "They got paid nothing. Most of them just wanted to come out and have a bit of fun and I think they all had fun."

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But he said he was not planning to head to Hollywood just yet.

"They'd probably say 'We can't tell what you're saying so we don't want you'," he said.

And here's the gloriously shy, nervous Kelly in action on the red carpet...

Photo gallery Kelly Brook In Action At Keith Lemon's London Premiere See Gallery