John Stamos and Caitlin McHugh Welcome Baby Boy Named Billy

Uncle Jesse is officially a father!

Congratulations are in order for actor John Stamos and his wife Caitlin McHugh as the couple just welcomed their first child together.

Stamos posted a precious black and white photo on Instagram of his newborn son Billy laying on his chest.

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Billy is named after Stamos' late father, William Stamos, who was always supportive of John's acting aspirations gave his blessing when John wanted to drop out of college to be an actor.

This is the first child for the 54-year-old star. He and model and actress Caitlin McHugh tied the knot in February of this year.