Co-star Christina Aguilera also appeared at the event in a long flowing green gown.
Aguilera makes her dramatic feature debut as Ali, a small-town singer who takes her shot at stardom performing at a neo-burlesque nightclub in Los Angeles.
When club owner Tess (Cher) hires charismatic Ali as a cocktail waitress, the ambitious big-city newcomer goes to great lengths to make a good impression. Taken under the wing of a friendly featured dancer (Julianne Hough), Ali quickly realizes that not everyone is quite as nice when she forms a friendship with bartender/aspiring musician Jack (Cam Gigandet) and incurs the wrath of the club's cattiest showgirl (Kristen Bell).
After making her leap to the stage with a little help from a sympathetic stage manager (Stanley Tucci) and the club's playfully androgynous host (Alan Cumming), Ali becomes the star attraction at The Burlesque Lounge, and the crowds start packing in.