Fashion Police has tapped Melissa Rivers, the daughter of the late Joan Rivers, as it's new co-host, E! announced Wednesday. Rivers will join returning co-hosts Giuliana Rancic and Brad Goreski when the series returns on Aug. 31. In addition to the late Joan, who died last September, her daughter fills the void left by Kelly Osbourne and Kathy Griffin. The two exited shortly after controversial comments Rancic made on the show in February about actress Zendaya's dreadlocks. Fashion Police, which will produce six new episodes, will also include two rotating celebrity chairs.??