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Britney Spears over the years: 19 sexiest looks (Photos)

Britney Spears appears at 102.7 KIIS FM's Wango Tango concert in Los Angeles, California on May 11, 2013.  <span class=meta>(Tony Dimaio / startraksphoto.com)</span>
April 1, 2014 7:30:28 PM PDT