John Stamos, 59, poses with mini-me son Billy, four, in first day of school photo

dailymail.co.uk:

John Stamos commemorated his son Billy’s first day of school by posting a picture of them together on Tuesday.The Fuller House star and 1990s heartthrob, now 59, shared his sentiments on the four-year-old’s scholastic milestone.‘One of us is starting his first day at school.

And the other is doing everything in his power not to cry,’ the father of one wrote. Good genes: John Stamos commemorated his son Billy’s first day of school by posting a picture of them together on TuesdayThe musician and actor became a father later in his life.After his marriage to Rebecca Romijn ended in 2005, Stamos took his time to find true love again.

In 2017 it was announced that Stamos was engaged to model and actress Caitlin McHugh whom he had met initially in 2011 when both guest starred on an episode of Law & Order: Special Victims Unit.

Doting dad: The 1990s heartthrob, now 59, wrote, ‘One of us is starting his first day at school. And the other is doing everything in his power not to cry’; seen SundayAfter the exciting news of their engagement in December 2017, they announced that they were also expecting their first child, born in April 2018.Billy is the spitting image of his celebrity father.In an interview with Good Morning America last year, Stamos said, ‘He's the light of our life.’ Happy family: John, Caitlin, and Billy attend Disney Junior's Marvel's Spidey and His Amazing Friends event at Santa Monica PierFatherhood looks good on Stamos, who proudly posed for the shot with his son on the front porch of their Los Angeles home.Both wearing crisp collared white short sleeve dress shirts, the father and son, looked happy and calm about the day ahead.Stamos continued to show that he is a doting father as he celebrated the new chapter.