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Britney Spears

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• Jan. 31: Security guards stand outside of the ambulance entrance at the UCLA Medical Center emergency room in Los Angeles.
• Britney Spears is pictured in 1999.
• Britney Spears performing on stage in 2002.
• Britney Spears and Justin Timberlake.
• Britney Spears and Madonna kiss during the 2003 MTV Music Awards.
• Britney Spears receives star on the Hollywood Walk of Fame.
• Britney Spears performing during 'NFL Kickoff Live 2003.'
• Britney Spears poses during a performance in 2004.
• Britney Spears singing in 2004.
• Britney Spears and Kevin Federline.
• Britney Spears is shown while pregnant in 2005.
• Britney Spears during an interview with Matt Lauer in June 2006.
• Britney Spears poses nude and pregnant on the August 2006 cover of Harper's Bazaar magazine.
• Nov. 21, 2006: Britney Spears presents award at the American Music Awards.
• Nov. 21, 2006: Britney Spears presents an award at the 2006 American Music Awards.
• Nov 29, 2006: Britney, Paris and Lindsay hang out together.
• Dec. 18, 2006: Britney Spears
• Feb. 2, 2007: Britney Spears, dressed in black, as she arrives to the showing of Kimora Lee Simmons' Baby Phat fall 2007 collection in New York.
• Feb. 17, 2007: Image from video shows Britney Spears at tattoo parlor in Sherman Oaks, Calif.
• Feb. 24, 2007: Britney Spears on the cover of People magazine.
• Sept. 9: Britney Spears performs at 2007 MTV Video Music Awards.
• Britney Spears in Sept. 2007.
• Britney Spears in Dec. 2007.
• Jan. 3, 2008: Britney Spears as she is wheeled out of the ambulance on a gurney at Cedars-Sinai Medical Center in Los Angeles.