"It's been quite a roller coaster ride, but I've grown and learned a lot about myself. The greatest thing is being able to interact with fans and touch people's lives."

• Born Christina María Aguilera on Dec. 18, 1980, in Staten Island, New York

• After recording "Reflection," the theme song for Disney's 1998 animated feature Mulan, Christina Aguilera's big break came with her self-titled debut the following year, which peaked at No. 1 on the Billboard 200 and spawned three chart-topping singles: "Genie In A Bottle," "What A Girl Wants" and "Come On Over Baby (All I Want Is You)."

• Aguilera won her first career GRAMMY for Best New Artist at the 42nd GRAMMY Awards for 1999, the fourth of seven straight female winners in the category. Christina Aguilera performed a medley of "Pero Me Acuerdo de Ti" and "Falsas Esperanzas" from her 2000 Spanish-language album Mi Reflejo at the 43rd GRAMMY Awards in 2001.

• Did you know? In 2009 Aguilera became the youngest and only artist under 30 at the time to make Rolling Stone's list of the 100 Greatest Singers of All Time at No. 58.

• Aguilera's charitable activities include activism in human rights, world issues and as a UN ambassador for the World Food Programme.