Christina Aguilera, a four-time Grammy Award-winning artist whose albums have sold more than 42 million copies worldwide, began singing in her early childhood. By age six, she began performing regularly in local talent shows, working her way to an appearance on the nationally televised competition Star Search. This was the true beginning of Aguilera’s professional career, leading her to joining Disney Channel’s reboot of The Mickey Mouse Club in 1992. Christina joined a cast that also featured future stars Britney Spears, Ryan Gosling, Justin Timberlake, JC Chasez, and Keri Russell. The New Mickey Mouse Club lasted for two years and after its cancellation, Aguilera began working behind the scenes of the pop machine, cutting a duet with Japanese pop singer Keizo Nakanishi called “All I Wanna Do,” then representing the U.S. three years later in the Golden Stag International Festival. Her first big break arrived in 1998, when she recorded “Reflection” for the soundtrack of Disney’s Mulan, a performance that lead to a contract with RCA Records. RCA released Christina Aguilera late in the summer of 1999. Christina’s debut reached the top of the U.S. charts on the momentum of the number one single “Genie in a Bottle,” which was followed in short order by another chart-topper, “What a Girl Wants,” which happened to be the first number one of 2000. Aguilera racked up recognition in a number of ways, playing the Superbowl halftime show and winning the Grammy for Best New Artist, as “Come on Over Baby (All I Want Is You)” gave her a third number one single. Aguilera kept new product flowing, too, releasing My Kind of Christmas and the Spanish-language Mi Reflejo by the end of the year. Christina Aguilera remained in the spotlight via her participation of a remake of Labelle’s “Lady Marmalade” for the soundtrack of Baz Luhrmann’s Moulin Rouge. When Aguilera released Stripped in 2002, she began using the appellation Xtina. Her ballad "Beautiful" peaked at No. 2 on the Top 100. Aguilera took another left turn for her next album, 2006’s Back to Basics. The title suggested something simple but the album was anything but, spilling out over two discs and running the gamut from brassy swing to modern dance. Its lead single, “Ain’t No Other Man,” was another blockbuster and Grammy winner for Christina, and the tour was her most ambitious to date. In 2008, Aguilera released her first hits collection, Keeps Gettin' Better. The album's title track peaked at #7 on the Billboard Hot 100, her highest debut on the chart. Aguilera was one of Billboard's Top 20 Artists of the Decade in their year-end charts. Aguilera returned with her fourth album, Bionic, in the spring of 2010. The album's lead single, "Not Myself Tonight," has reached the top 25 on Billboard's Top 100 and the Canadian Top 100 charts.