Cher and Congresswoman Mary Bono Mack surprised Chaz Bono Saturday night at the Gay and Lesbian Alliance Against Defamation's (GLAAD) 23rd annual Media Awards in Los Angeles.

Cher and Bono Mack presented Bono with the group's Stephen F. Kolzak Award, which is given to a gay, lesbian, bisexual or transgender member of the entertainment community.

Bono is the child of Cher and the late entertainer-turned-politician Sonny Bono, who married Bono Mack in 1986.

“So much fun at Glaad awards! I really surprised Chaz!” Cher tweeted to her more than 576,000 followers. “HE was adorable, said wow mom I was surprised I forgot what I was going 2say! FRO.”

Previous Stephen F. Kolzak Award honorees include Wanda Sykes, Rufus Wainwright, Melissa Etheridge, Bill Condon, Todd Haynes, Alan Ball, Ellen DeGeneres, Sir Ian McKellen and Robert Greenblatt.

Bono also shared GLAAD's outstanding documentary prize with directors Fenton Bailey and Randy Barbato for Becoming Chaz, the film that chronicles Bono's female to male transition.

(Related: Josh Hutcherson, Chaz Bono win GLAAD Media Awards.)