Aguilera, 29, plays Ali Rose, a small-town girl who travels to LA to become a star and finds a job in a burlesque club in the new movie, which is released on November 24.
Aguilera stars alongside Cher, Kristen Bell and Julianne Hough in the new film and said she made some great friendships.
Speaking to ET, she said: "There were many times where we were sitting on a couch on the side of the room where they'd be like: 'Okay, enough talking already, we have to get the shot. It's one o'clock in the morning!'"