On the face of it, Simon Cowell is one man who could do with getting swept along with Hollywood's obsession with the body beautiful.

But TV's Mr Nasty is clearly not one to get hung up on his appearance after showing off the latest addition to the Cowell empire – two extra chins.

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Chin up: TV's Mr Nasty shows off his triple chins as he leaves The Ivy in LA yesterday

Perhaps the American Idol and X Factor judge is enjoying the champagne lifestyle a little too much after he was seen at the Ivy in Los Angeles in Beverly Hills on Thursday.

Not one for making an effort, Cowell, 48, who has been dating Terri Seymour for five years, wore his trademark grey T-shirt and jeans as he puffed away on an after-lunch cigarette.

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All smiles: Simon Cowell poses for a picture outside The Ivy

Life's a drag: Simon Cowell smokes a cigarette after lunch at The Ivy

But as soon as he stepped outside, he turned on the charm and the smile, after being mobbed by hundreds of fans.

Cowell, who is usually known for his harsh and blunt comments when fronting TV talent shows, instead showed his softer side as he stopped for photos and filming as the crowd swarmed around him.

It was the second time in a week that has been uncharacteristically nice.

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In the spotlight: The X Factor judge is mobbed by fans

When appearing on Oprah Winfrey's chat show on Wednesday, Cowell agreed to pay off the mortgage of a couple whose three-year-old daughter has cancer.

He said he had only just realised how good it was to give and told Oprah: "It's taken me 48 years. I credit you with this."