The Grudge actress Jenna Dewan poses as she arrives as a guest at the premiere of Columbia Pictures’ “ Pineapple Express .” Dewan, who is an actress and former backup dancer for Justin Timberlake, Sean Combs and Pink, is best known for dating Channing Tatum. Photo by Derek Steele/BuzzFoto.com Related posts: Puffy Thinks it’s Sunny at Night  ...