Simon Cowell $300m advertising deal!

Simon Cowell is once again in the money.

The music mogul who’s believed to be worth about $200 million has helped secure a $300 million advertising deal for his US X Factor TV talent show.

It marks the largest pre-launch advertising revenue of any US program ever, according to Britain’s Daily Mirror newspaper.

Three big brands have signed up, including Pepsi.

“Simon is yet again in the money. With a 14% share in the stake, he looks likely to walk away with over $46 million before the first show has even aired,” a source said.

Recent reports claimed Cowell, 51, is going on a strict diet after piling on the pounds during a recent trip to the UK.

“He’s been having meals Brits love such as spaghetti Bolognese and fish fingers and chips,” a source told British newspaper The Sun.

“Being back in Los Angeles, he said it’s much easier for him to lose it as he will swim every day and his fiancee Mezhgan Hussainy will make sure he eats healthily.”