Jessica Alba has been telling folk that there's a lot more dancing for her in the Sin City sequel, A Dame to Kill For. She probably won't be shouldering whole whine-n-grin burden by herself, though, as Julia Garner has been added to the film's pole brigade.
Deadline say her character, identified thus far only as "a young stripper" will be sharing screentime with Joseph Gordon-Levitt as the gambler, Johnny. It's a new story written just for the film so anything else, right now, is more or less guess work.
You may have seen Garner in Martha Marcy May Marlene and The Perks of Being a Wallflower, but I might recommend Electrick Children as a good showcase for the actress – she essentially carries it from front to back.