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At the Academy of Country Music Awards on May 23, 2006, in Las Vegas.
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At the 40th Annual CMA Awards in Nashville.
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At the 2007 CMT Music Awards in Nashville.
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At the Academy of Country Music New Artists' Party for a Cause on May 14, 2007, in Las Vegas.
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At the 41st Annual CMA Awards on Nov. 7, 2007, in Nashville.
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At the 50th Annual Grammy Awards on Feb. 10, 2008, in Los Angeles.
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Performing during the 42nd Annual CMA Awards on Nov. 12, 2008, in Nashville.
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At the 2008 MTV Video Music Awards on Sept. 7, 2008.
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At the 42nd Annual CMA Awards on Nov. 12, 2008, in Nashville.
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At the 44th annual Academy of Country Music Awards on April 5, 2009, in Las Vegas.
Bryan Bedder via Getty Images
Performing on NBC's "Today" on May 29, 2009, in New York City.
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At the 2009 CMT Music Awards on June 16, 2009, in Nashville.
Steve Granitz via Getty Images
At the 51st Annual Grammy Awards on Feb. 8, 2009, in Los Angeles.
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At the 2010 American Music Awards on Nov. 21, 2010, in Los Angeles.
Vittorio Zunino Celotto via Getty Images
At the Roberto Cavalli fashion show on Sept. 27, 2010, in Milan.
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At the Wonderstruck fragrance launch on Oct. 28, 2011.
Royce DeGrie via Getty Images
At the annual Nashville Symphony Ball on Dec.10, 2011, in Nashville.
Frederick M. Brown via Getty Images
At the 2012 MTV Video Music Awards on Sept. 6, 2012, in Los Angeles.
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At "The Tonight Show With Jay Leno" on Feb. 20, 2012.
Gregg DeGuire via Getty Images
At the 47th Annual Academy Of Country Music Awards on April 1, 2012, in Las Vegas.
Mike Marsland via Getty Images
At the Brit Awards on Feb. 20, 2013, in London, England.
Gregg DeGuire via Getty Images
At the 2013 Billboard Music Awards on May 19, 2013, in Las Vegas.
Steve Granitz via Getty Images
At the 70th Annual Golden Globe Awards on Jan.13, 2013, in Beverly Hills.
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At the 2013 MTV Video Music Awards on Aug. 25, 2013, in New York City.
Kevin Mazur via Getty Images
At the 2014 MTV Video Music Awards on Aug. 24, 2014.
Karwai Tang via Getty Images
Performing at the Victoria's Secret fashion show on Dec. 2, 2014, in London.
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At the 2014 Victoria's Secret Fashion Show on Dec. 2, 2014, in London.
Jeffrey Mayer via Getty Images
At the 2015 Billboard Music Awards on May 17, 2015, in Las Vegas.
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At the 57th Grammy Awards on Feb. 8, 2015, in Los Angeles.
Karwai Tang via Getty Images
At the 2015 Brit Awards on Feb. 25, 2015, in London.
Jason Merritt/TERM via Getty Images
At the 2015 MTV Video Music Awards on Aug. 30, 2015, in Los Angeles.
Steve Granitz via Getty Images
At the 58th Grammy Awards on Feb. 15, 2016, in Los Angeles.
Alberto E. Rodriguez via Getty Images
At the 2016 Vanity Fair Oscars party on Feb. 28, 2016, in Beverly Hills.
Jesse Grant via Getty Images
At the iHeartRadio Music Awards on April 3, 2016.
Larry Busacca via Getty Images
At the Met Gala on May 2, 2016, in New York City.
Mark Davis via Getty Images
At the 64th Annual BMI Pop Awards on May 10, 2016, in Beverly Hills.
Larry Busacca via Getty Images
Performing onstage on Feb. 4, 2017, in Houston.