Rapper Ja Rule and supermodel Naomi Campbell have signed on for Sean Combs new TV series COOKING SHOWDOWN. The show will pair superstar chefs with celebrities in a week-long cooking competition. Also signing up for the new series are TRUE LIES star Tom Arnold, country music singer Big Kenny, DAYS OF OUR LIVES soap star Alison Sweeney, former O-TOWN singer Ashley Parker Angel and volleyball player Gabrielle Reece. Former GROWING PAINS star Alan Thicke will host the show, along with US cable channel Food Network host Sandra Lee. Combs will executive produce the show, which will debut the week of 17 April (06).