Have mercy — John Stamos is a dad.

The Fuller House star announced the news on Instagram, revealing he and wife Caitlin McHugh have welcomed a son.

“From now on, the best part of me will always be my wife and my son. Welcome Billy Stamos (named after my father),” Stamos, 54, captioned a photo of the newborn nestled on his chest. “#NotJustanUncleAnymore #Overjoyed”

RELATED: Dad-to-Be John Stamos Is Emotional About Fatherhood at 54: ‘I’ve Waited My Whole Life for This’

In an emotional December Instagram post, Stamos remembered his late father as he wrote about becoming a dad.

“I will certainly fall short of the father my pop was, but – I’m going to give it my all! #Balance #BillStamos#Hero,” Stamos captioned a throwback picture of the two.

“It kills me that my parents aren’t here to be part of this, but I know it probably wouldn’t be happening if they weren’t up there,” he previously told PEOPLE.

“You know how you put your father on a pedestal, and he’s a superhero, and then as you grow older, you go, ‘Ah, he’s just a man’? I…

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Mayra Rodriguez

Content Editor at oneQube
Work from home mom dedicated to my family. Total foodie trying new recipes.Love hunting for the best deals online. Wannabe style fashionista. As content editor, I get to do what I love everyday. Tweet, share and promote the best content our tools find on a daily basis.
Mayra Rodriguez
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