Who woulda ever thought that 1) Simon Cowell would be a dad and 2) that he'd be so skinny!

I mean, he wasn't really that overweight, but he's super slim now! No dad bod for this dad -- though he does like his beer. Check out him leaving Nobu Malibu the other night with a beer in hand. Don't worry, he wasn't driving!

The America's Got Talent/X Factor/American Idol judge is enjoying the last days of summer in Malibu with baby mama Lauren Silverman and his son Eric. The mini-me 5-year-old strolled along with his parents, shopping and reading about sharks. Coming off of Shark Week 2019, we imagine the young lad has a fascination with the scary fish ... and we don't blame him!

So back to Simon ... the impetus for his weight loss? A 2017 health scare in which his blood pressure dipped so low he passed out and fell down the stairs in his home! After that, he went vegan, though he admits to still eating some fish (hence Nobu and sushi) and he says he still enjoys the national drink of England ... beer! "Once you get used to it, it's easier," he told The Sun. "You feel better, my memory is better. So I didn’t find it difficult. I can still have beer, so I’m happy." Happy, indeed!