John Stamos, 59, poses with mini-me son Billy, four, in first day of school photo

Hottest Celebrity Pics This Week Of Aug 29 – Sept. 4: John Stamos & More

John Stamos Turns 60: See The ‘Full House’ Hunk From His Young Days To Now

Jodie Sweetin Reveals How The Late Bob Saget Attended Her Wedding -- Thanks To John Stamos!