John Travolta Surprise Grease fans sing as Danny Zuko
Hollywood Howl’s Grease Sing a long event automatically, systematically, hydromatic and grease lightning – thanks to a very special cameo from the movie star John Travolta. “Tonight at Hollywood Bowl, for the first time I wonder all in Grease Sing-A-Height and Dress Like Danny Zuko, “Travolta, 71, wrote by Instagram On Friday, June 27th. “No…