Brown, also known as Scary Spice during her time with the 1990s pop group, will take her seat alongside Howie Mandel and Howard Stern when the variety competition show returns for its eighth season this summer on NBC.
Brown was previously a contestant on ABC's "Dancing with the Stars." In 2010, she starred with her family in a reality series for The Style Network.
She recently completed a two-season run as judge on the Australian edition of "The X Factor" and for one season was co-host of the Australian "Dancing With the Stars."
