John Stamos showed love to his “brother” Dave Coulier on Instagram Wednesday after Coulier, 65, announced that he’s been diagnosed with stage 3 cancer. Stamos, 61, posted a tribute with various photos of the pair over the years, as well as an emotional message to his longtime friend.

John Stamos has offered support after his 'Full House' costar Dave Coulier revealed his cancer diagnosis to fans.

"Full House" stars and friends John Stamos and Dave Coulier 's bond is as strong as ever. This was made apparent after Coulier revealed on Wednesday he had been diagnosed with stage 3 non-Hodgkin lymphoma, reports People.