The 54-year-old Fuller House star, in announcing the birth of his son with Caitlyn McHugh, captioned a photo 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."
TOPICS: John Stamos, Netflix, Fuller House, Caitlin McHugh