The 46-year-old 'You're Still the One' hitmaker is scheduled to begin a two-year residency at the Colosseum in Sin City's famed Caesars Palace resort from December 1.
In a bid to help boost tourism, Twain has volunteered to star in a promotional advertisement for the lavish resort, reported Daily Star online.
In the clip, Twain is seen wearing a fitted black jacket and oversized sunglasses, as she enters the shot and flashes a big smile for the camera and walks into the lobby with her entourage.
The commercial also features a guest appearance by Celine Dion, who is midway through her three-year residency at the venue.