Christina Aguilera's Top 10 Biggest Career Moments

Christina Teams With Mya, P!nk & Lil Kim for Another Smash

"Lady Marmalade," a remake of Labelle's 1975 single of the same name for the soundtrack to the 2001 film "Moulin Rouge," corraled female vocal talent far and wide -- from pop (Pink) to R&B (Mya) to hip-hop (Lil Kim) -- with Aguilera's spectacular vocals front and center for the finale. The single, produced by Missy Elliott and Rockwilder, was an international smash and another No. 1 for Christina. Meanwhile, its music video, in which all parties involved got to play dress-up and Aguilera's hair became a teased behemoth, took home the MTV VMA for Video of the Year.

The 'Dirrty' Transformation

For her second album, "Stripped," Christina Aguilera more or less vanished and was replaced by the entity known as "Xtina." With her hair dyed black, nude photographs on magazine covers, and a more sexually explicit persona front and center, Aguilera rearranged her image for the 2002 release of "Stripped," which was led by the raunchy pop track "Dirrty" featuring Redman. Despite causing controversy within the pop universe, "Stripped" was another hit, and led to the Justified/Stripped tour alongside her former "Mickey Mouse Club" co-star, Justin Timberlake.

Christina's 'Beautiful' Collaboration With Linda Perry

Along with the dirrtier side of the pop star that it presented, "Stripped" was also notable for pairing Aguilera with producer/songwriter Linda Perry, who contributed to four songs on the project. None was quite as poignant as "Beautiful," the soaring ballad that served as the album's second single and arguably the best song of Aguilera's career. With a message of acceptance radiating from its core and a music video that touched on LGBT issues, "Beautiful" lived up to its title, and further legitimized Aguilera as a serious pop talent.

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