Alice "Tan" Ridley, mom of Gabourey Sidibe and America's Got Talent semi-finalist, died last month at the age of 72.

The mother of the actress Gabourey Sidibe, she spent decades singing full time as an underground busker in New York City.

Alice Tan Ridley herself emerged into the limelight with her stirring 2010 performance on America's Got Talent. Kim and Khloe ...