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Pop performer Christina Aguilera has endured many a transformation during her two decades (so far!) in the spotlight. She first appearing on Disney's The Mickey Mouse Club alongside fellow future pop stars like Britney Spears and Justin Timberlake. In 1999 she released her self-titled debut album and almost immediately became pop royalty.

Christina Aguilera has rocked *a lot* of different looks over the years. She's done crimped, tanned, lacquered, studded, and, yes, pantsless.

Read on to take a walk down memory lane and relive some of the pop star's most interesting fashion moments. Which of Aguilera's many colorful looks is your favorite?