Melanie Brown is to replace Sharon Osbourne for the upcoming eighth season of "America's Got Talent," The Hollywood Reporter said. The former Spice Girl will serve alongside returning judges Howard Stern and Howie Mandel on the NBC talent show, which is to kick off its new season May 28. Brown previously served as a judge on the Australian edition of "The X Factor" and as co-host of "Dancing with the Stars Down Under." Osbourne announced her departure from "America's Got Talent" last August, alleging NBC fired her son, Jack, from the physically arduous competition show, "Stars Earn Stripes," because he was diagnosed with multiple sclerosis. The network has denied the claim, The Hollywood Reporter said.