Julianne Hough stopped by The Tonight Show Starring Jimmy Fallon on Monday night, where she dropped major details about Fox's upcoming production of Grease: Live. Aside from being overly excited about playing Sandy [1], the Dancing With the Stars [2] host revealed that two members from the original cast are returning [3] for the live musical. Jimmy also joked that his audition for Danny must have gotten lost in the mail as he did a pretty spot-on impersonation of the character made famous by John Travolta [4]. See the full video above, and then check out the epic cast pictures [5].