John Stamos sparked controversy after sporting a bald cap to show his support for pal Dave Coulier, who recently revealed his cancer diagnosis.

Coulier recently began chemotherapy.Decades after TV sitcom Full House ended, costars Dave Coulier and John Stamos are more like family. They're so close, in fact, that Stamos covered up the hair that his character,

Stamos shared a few new photos of himself donning a bald cap to match Coulier's bald head. In one snap, Stamos helped shave Coulier's head, while another photo