John Stamos said that Mike Love's face "went blank," when he told the Beach Boys lead vocalist about Brian Wilson's death.

Mick Fleetwood, Carnie Wilson, Elton John and more are sharing tributes to Brian Wilson following the death of the legendary Beach Boys cofounder.

Carole King, John Cusack, Sean Ono Lennon, Ronnie Wood, Nancy Sinatra and more celebrities are sharing their sorrow on the death of Brian Wilson.

Brian Wilson and his family were open about his health, from his needing a conservatorship for his dementia to his battle with substance use.

John Stamos, Nancy Sinatra and John Cusack were among the celebrities paying tribute to musician Brian Wilson after his death was announced Wednesday. Wilson's family announced the Beach Boys founder had died in an Instagram post on his account.

At the time he died, legendary Beach Boy Brian Wilson was dealing with a series of serious health issues. The maestro behind the band's famous "California sound," Wilson passed away at age 82, according to a June 11 post by his family on Instagram.

Carnie Wilson is mourning the death of a legendary family member. The Beach Boys co-founder Brian Wilson’s eldest daughter shared an Instagram tribute Wednesday reacting to his death at age 82. “I have no words to express the sadness I feel right now,

“Brian had that mysterious sense of musical genius that made his songs so achingly special. The notes he heard in his head and passed to us were simple and brilliant at the same time. I loved him, and was privileged to be around his bright shining light for a little while. How we will continue without Brian Wilson, ‘God Only Knows.’”