Simon Cowell Squeezes Into His Favorite Tight Tee

Sooner or later little Eric is going to fit into one of dad's trademark tee-shirts -- maybe by age 5?

On Monday Simon Cowell and a buddy went for a cruise in the music mogul's silver Tesla, and the guys had a blast catching up. Simon flew in from London the other day, and even though he was a bit jet-lagged, he was in a great mood. Come to think of it, ever since he welcomed his baby boy with Lauren Silverman earlier this year, we haven't spotted him without a grin on his face...

Though he said in an interview with the Mirror that he regretted his affair with Silverman, things really ended up working out for the best. "It is not something I am proud of or wanted to happen in terms of hurting anyone. It just happened," he said. "But then of course you have a baby and you look at the baby and you kind of go 'this is what happened from it.' The great thing about Lauren is she loves what I do, so she sits in if I am watching Britain's Got Talent for example, and she has got a good opinion. And I seem to have got my mojo back again."