Comediennes Tina Fey and Amy Poehler have signed up to lend their likenesses and voices to the upcoming New York Spring Spectacular show starring legendary dance troupe The Rockettes. The multi-media musical production will also feature video cameos from the likes of 50 Cent, Whoopi Goldberg, Bella Thorne, John Leguizamo, Martha Stewart and Donald Trump, while Nashville actors Laura Benanti and Derek Hough are set to take to the stage for each Radio City Music Hall show. The production begins in the Big Apple next month (Mar15).