Simon Cowellis showing off a svelte new figure — and it’s all thanks to his revamped, vegan diet.

TheAmerica’s Got Talentjudge surprised fans with his trim physique Tuesday night on the red carpet, wearing a tight-fitting gray shirt and black pants.

“I went to see this guy, who’s very well-known, and he said to me after doing some blood work, ‘You can’t have red meat, dairy, sugar, bread or gluten,’” Cowell recalled toExtrain March. “I’m thinking, what about alcohol? That’s all I care about. And he said, ‘Maybe not quite as much as you had before.’”

TheAmerican Idolalum took the doctor’s advice, jokingly comparing the diet to that of hisson Eric, 5, whom he shares with girlfriendLauren Silverman.

“It’s like the Eric diet because he actually, apart from ice cream, he actually likes water,” Cowell marveled. “I mean, who likes water? And his raw vegetables. So I’m on like, the Eric Cowell diet.”

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Simon Cowell

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Cowell toldThe Sunin April that he made changes to his food intake within 24 hours of meeting with the doctor, and has been strict in cutting out meat, dairy, wheat and sugar, things he “shouldn’t have been eating” anyway.

Simon Cowell.Jon Kopaloff/FilmMagic

Simon Cowell

“I loved those comfort foods, that’s all I’ve eaten all my life. I love jam tarts, hamburgers, spaghetti Bolognese,” he toldThe Sun. “I can eat fish but this year I will go the whole way.”

“I can eat certain fruits, but not all fruits. You have to be careful because some fruit can have more sugar than a can of Coke,” he explained. “Once you get into a pattern I’ve found it quite enjoyable. It has helped me sleep and I wake up feeling less tired. I noticed a massive difference in how I felt in about a week.”

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Simon Cowell honored with a Star on the Hollywood Walk of Fame, Los Angeles, USA - 22 Aug 2018

Cowell whipped himself into shape following ascary incident in October 2017that he later said served as a wake-up call.

The star was rushed to the hospital after he fainted and fell down the stairs while trying to get himself a glass of hot milk during a bout of insomnia.

He later explained that his fall was due to low blood pressure.

“Sometimes we get a reminder that we’re not invincible and this was certainly mine. It was a huge shock,” he toldThe Sun. “I have got to really take good care of myself to sort that out.”

source: people.com