08/16/2010 05:12 am ET Updated May 25, 2011

Alice Tan Ridley, Gabourey Sidibe's Mother, Wows 'America's Got Talent'

Oscar-nominated actress Gabourey Sidibe isn't the only talent in the family.

Her mother, Alice Tan Ridley, is a well-known subway performer with a huge, booming singing voice. And Ridley used her vocal chords to wow the judges on 'America's Got Talent.'

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