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2001, 2009, and 2018 - (Photos from left: Ron Galella/WireImage, Steve Granitz/WireImage, Shareif Ziyadat/Getty Images)

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2001 - (Photo: Ron Galella/WireImage)

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2001 - (Photo: SGranitz/WireImage)

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2001 - (Photo: J. Vespa/WireImage)

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2002  - (Photo: SGranitz/WireImage)

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2002  - (Photo: Jeffrey Mayer/WireImage)

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2003 - (Photo: Doug Benc/Getty Images)

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2003 - (Photo: Robert Mora/Getty Images)

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2003  - (Photo: Jeff Kravitz/FilmMagic)

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2003 - (Photo: Vinnie Zuffante/Getty Images)

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2004 - (Photo: Jon Kopaloff/FilmMagic for Nickelodeon Magazine)

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 2004 - (Photo: SGranitz/WireImage for BET Network)

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2005 - (Photo: J.Sciulli/WireImage)

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2005 - (Photo: Gregory Pace/FilmMagic)

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2005 - (Photo: Jeffrey Mayer/WireImage)

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2005 - (Photo: Johnny Nunez/WireImage)

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2006 - (Photo: Vince Bucci/Getty Images)

Photo By Photo: Vince Bucci/Getty Images

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2006 - (Photo: Frederick M. Brown/Getty Images)

Photo By Photo: Frederick M. Brown/Getty Images

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2006 - (Photo: Jeff Kravitz/FilmMagic, Inc)

Photo By Photo: Jeff Kravitz/FilmMagic

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2007 - (Photo: Jason Merritt/FilmMagic)

Photo By Photo: Jason Merritt/FilmMagic

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2007 - (Photo: Jason Merritt/FilmMagic)

Photo By Photo: Jason Merritt/FilmMagic

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2008 - (Photo: Charley Gallay/Getty Images)

Photo By Photo: Charley Gallay/Getty Images

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2008 - (Photo: Kevin Mazur/WireImage)

Photo By Photo: Kevin Mazur/WireImage

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2009 - (Photo: Johnny Nunez/WireImage)

Photo By Photo: Johnny Nunez/WireImage

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2009 - (Photo: Jeffrey Mayer/WireImage)

Photo By Photo: Jeffrey Mayer/WireImage

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2009 - (Photo: Steve Granitz/WireImage)

Photo By Photo: Steve Granitz/WireImage

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2010 - (Photo: Jeff Kravitz/FilmMagic)

Photo By Photo: Jeff Kravitz/FilmMagic

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2010 - (Photo: Jeff Kravitz/FilmMagic)

Photo By Photo: Jeff Kravitz/FilmMagic

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2011 - (Photo: Jeffrey Mayer/WireImage)

Photo By Photo: Jeffrey Mayer/WireImage

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2011 - (Photo: Jeffrey Mayer/WireImage)

Photo By Photo: Jeffrey Mayer/WireImage

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2012 - (Photo: Rob Kim/FilmMagic)

Photo By Photo: Rob Kim/FilmMagic

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2012 - (Photo: Donald Bowers/Getty Images for Motions Haircare)

Photo By Photo: Donald Bowers/Getty Images for Motions Haircare

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2013 - (Photo: Bennett Raglin/Getty Images)

Photo By Photo: Bennett Raglin/Getty Images

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2013 - (Photo: Janette Pellegrini/Getty Images for Women's Health)

Photo By Photo: Janette Pellegrini/Getty Images for Women's Health

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2014 - (Photo: Gary Gershoff/WireImage)

Photo By Photo: Gary Gershoff/WireImage

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2014 - (Photo: Michael Bezjian/WireImage)

Photo By Photo: Michael Bezjian/WireImage

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2015 - (Photo: Frederick M. Brown/Getty Images)

Photo By Photo: Frederick M. Brown/Getty Images

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2015 - (Photo: Jason Merritt/Getty Images)

Photo By Photo: Jason Merritt/Getty Images

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2016 - (Photo: John Shearer/Getty Images)

Photo By Photo: John Shearer/Getty Images

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2016 - (Photo: Matt Winkelmeyer/Getty Images)

Photo By Photo: Matt Winkelmeyer/Getty Images

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2017 - (Photo: Steve Granitz/WireImage)

Photo By Photo: Steve Granitz/WireImage

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2017 - (Photo: Gregg DeGuire/WireImage)

Photo By Photo: Gregg DeGuire/WireImage

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2017 - (Photo: Aaron J. Thornton/Getty Images)

Photo By Photo: Aaron J. Thornton/Getty Images

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2018 - (Photo: Shareif Ziyadat/Getty Images)

Photo By Photo: Shareif Ziyadat/Getty Images