"She went behind my back and auditioned. She's sneaky! I think she was just too nervous to tell me about it then she went on and rocked it. I'm very proud of her." Actress Gabourey Sidibe had no idea her singer mother, Alice Tan Ridley, planned to try out for U.S. reality show America's Got Talent earlier this year (10). She's since progressed to the semi-finals of the TV competition.