Ant and Dec think fatherhood has let Simon Cowell's softer side show.
The 54-year-old music mogul welcomed his first child, Eric, last week and the presenting duo - who front Simon's show 'Britain's Got Talent' - feel the star will change like Robbie Williams, who has a 17-month-old daughter, Theodora Rose.
Ant told The Sun newspaper: "I texted Simon and he texted back saying he can't wait for us to meet him.
"It's going to change him. I've seen the change in Rob since he's had Teddy. It changes you for the better.
"Rob is just gushing about it all the time. I hope the same thing happens to Simon. I'm sure it will."
Dec then added: "I don't think Simon expected to fall in love with Eric so instantly. I don't think he knew how much it was going to change him."
The stars also revealed they are working on a sitcom to celebrate their 25 years working together on TV.
Dec said: "It will probably be based on two guys who are mates who happen to present Saturday night TV shows and live together and the hilarious capers that follow. There would be good material in that."
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