He was said to be a 'natural' father to newborn son Eric and it looks like Simon Cowell is living up to his reputation.
The music mogul has left Lennox Hill hospital in New York City with partner Lauren Silverman and baby Eric in tow.
And Silverman seems to have taken a leaf out of Kate Middleton's book, proudly displaying her 'mummy tummy' as she entered a luxury hotel with her other half.
While they were assisted by a nanny, Cowell was hands on holding his son in a baby carrier.
Simon was bursting with pride as he posted an image of his two-day-old son resting on his chest in hospital, saying: "Mum, Dad and Eric. Now two days old. I never knew how much love and pride I would feel. . . now you can see how very handsome little Eric is."
He is said to have wept at the birth, telling Lauren: "This is the happiest day of my life."
Her father Steve, and her stepmother Rosy Davis, have both been to visit the new arrival.
The first person Simon called was his mother Julie Brett (87), who was said to be deeply touched that he had called his dad a mentor.
Simon's father died of a heart attack aged 81 in 1991, just as Cowell was celebrating the first number one single with Westlife.
It is reported that the X Factor creator ordered a hamburger and a Corona lager to celebrate the baby's arrival before he left the hospital in the early hours of the morning.
A source close to Simon said that he was "completely besotted." "He is such proud dad and they (the couple) are completely obsessed," the friend added.
The talent show businessman is estimated to be worth about $400m (€290m).