John Stamos welcomes first child with wife Caitlin McHugh at age 54

John Stamos has announced that he's welcomed his first child with wife Caitlin McHugh.

The 54-year-old took to social media to reveal the happy news, announcing that they have welcomed a baby boy.

The couple also revealed the baby name they picked for their son, explaining that he’s named after his grandfather – Billy Stamos.

Alongside an adorable picture of his newborn baby, the  General Hospital star wrote on Instagram: ‘From now on, the best part of me will always be my wife and my son. Welcome Billy Stamos (named after my father) #NotJustanUncleAnymore #Overjoyed’.

Fans were quick to congratulate the new dad, writing in the comments to send the actor their well-wishes.

One said: ‘I am so happy for the both of you!! He is a beautiful precious litlte boy!! The best job you will ever have is the joy of being a parent. He is one lucky little boy! He has two great parents.’

Another wrote: ‘Congratulations! You deserve this so much! Hope your wife has a safe recovery. And good job mommy! Enjoy everything about these precious moments!’

A third also commented: ‘Tearing up!!! I am so so so excited for you. We just had a little girl a month ago. Congratulations!!!!!!’

John and his wife Caitlin, 32, announced they were expecting their first child in December, in an interview with People magazine.

He said at the time: ‘I always wanted to be a dad. Clearly I had to do some work on myself, first.

‘I have a youthful thing. People say, “Oh, you look young. You’ll start believing you’re gonna live to be 150.” And then you wake up and go, “No, man, this is it. This is not a rehearsal.”‘

I asked…she said yes! …And we lived happily ever after💍

A post shared by John Stamos (@johnstamos) on

The pair got engaged a few months before revealing their lovely baby news, in October, but they already knew they were about to become parents.

John said in the interview: ‘The [pregnancy] happened. Then I said, I better have a ring on her finger because it’s the right thing to do, and I wanted to marry her anyway. So I called her parents to ask, and it was like, “You better!”‘