Simon's girlfriend Lauren Silverman gave birth on Valentine's Day in the same New York maternity ward where Beyoncé Knowles had her daughter Blue Ivy.
A close friend of the couple told the paper: “It was a very emotional day for them and such a special moment when the baby arrived.
“There were happy tears shed by everyone, including Simon. Eric is absolutely amazing and they’re all so delighted. He’s very handsome and Simon and Lauren are completely besotted. Simon was at Lauren’s side the entire time and he told her it was the best day of his life.”
Meanwhile, the Mirror has revealed that the baby's middle name Philip is a tribute to both Simon's late father, whose middle name was Philip, and his tycoon friend Sir Philip Green.
A source told the paper: “Simon wanted to pay proper tribute to the influence of his late father in his life. Eric Philip is clearly a very proper and respectful tribute to the man. But there’s no doubt he also wanted to pay some kind of tribute to another Philip who has been a major inspiration in his life, Sir Philip Green.
“It’s tremendous he’s been able to pay respect to two different male role models with his baby son’s birth.”
The paper also claimed that Simon celebrated the birth in his own unique way - by ordering a hamburger and a beer.
Simon Cowell reportedly held his baby son in his arms and told him "I've waited all my life for you" following the birth on Friday.
The Sun claims that the TV talent show supremo was overcome with pride as he held baby Eric for the first time.
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