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Uncle Jesse is officially a daddy!

John Stamos and his wife, Caitlin McHugh, welcomed a bouncing baby boy.

The 54-year-old “Fuller House” actor announced the birth of Billy Stamos via Instagram along with a sweet photo of his newborn son sleeping on his chest.

John captioned the photo:

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

Congratulations to the happy family.