Britney Spears Signs 2-Year Deal to Perform in Las Vegas Britney Spears entered a deal to perform 100 shows during a two-year residency at the Planet Hollywood Resort and Casino in Las Vegas. The terms of the deal have not been released. Spears joins the ranks of stars like Celine Dion, Elton John, and Prince who have signed long-term contracts to perform in Las Vegas. Dion spent three years in the gambling capital for a sum said to be $100 million, according to Reuters. Spears will perform her first show on Dec. 27, and tickets go on sale Tuesday.