It's been four years since U.S. First Lady Michelle Obama strutted onto our style stage: dazzling us in Thakoon (as her husband, President Barack Obama, accepted the Democratic nomination in 2008), donning Canadian designer Jason Wu and recently wearing Thom Browne (at the third and final 2012 presidential debate).

Her sartorial smarts have wowed us at every turn, including her ability to mix high-brow fashion with lower-priced separates (she's as big a fan of J.Crew as we are).

In honour of the 2012 U.S. presidential election, Polyvore has rounded up some of the First Lady's most beloved outfits.

Check out the timeline of Michelle Obama's top style moments from the 2008 election to now.

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  • August 2008

    <a href="http://www.polyvore.com/inauguration_celebration_with_simplysoles/set?id=5827726" target="_hplink">In one of her first displays of support for young American designers, Michelle Obama, in Thakoon, as her husband accepted the Democratic nomination.</a>

  • January 2009

    <a href="http://www.polyvore.com/inauguration/set?id=38091256" target="_hplink">Obama wears Jason Wu to President Obama's first inauguration.</a>

  • February 2009

    <a href="http://www.polyvore.com/%D0%B1%D0%B5%D0%B7_%D0%BD%D0%B0%D0%B7%D0%B2%D0%B0%D0%BD%D0%B8%D1%8F/set?id=18025367" target="_hplink">FLOTUS wears Michael Kors in her first official White House portrait.</a>

  • March 2009

    <a href="http://www.polyvore.com/153/set?id=62034183" target="_hplink">Obama covers the March 2009 issue of Vogue in Jason Wu.</a>

  • July 2010

    <a href="http://www.polyvore.com/fashionable_first_lady/set?id=62057364" target="_hplink">Pictured at the White House Correspondents' Association Dinner in a red Prabal Gurung gown.</a>

  • January 2011

    <a href="http://www.polyvore.com/lady/set?id=27609077" target="_hplink">Obama wears Alexander McQueen to State Dinner.</a>

  • March 2012

    <a href="http://www.polyvore.com/my_america_president/set?id=46678894" target="_hplink">Obama stands out in a teal Marchesa column at the annual White House State Dinner.</a>

  • March 2012

    <a href="http://www.polyvore.com/michelle_obama_is_fierce/set?id=46435157" target="_hplink">FLOTUS continues to show support for young American designers, in a Wes Gordon jacket at Nickelodeon's annual Kids' Choice Awards.</a>

  • April 2012

    <a href="http://www.polyvore.com/michelle_obama_white_house_correspondents/set?id=48099282" target="_hplink">Obama in Naeem Khan at White House Correspondents' Association Dinner.</a>

  • May 2012

    <a href="http://www.polyvore.com/washington_dc/set?id=58577406" target="_hplink">Obama keeps it casual in cerulean trousers for a benefit event at Sidwell Friends School.</a>

  • October 2012

    <a href="http://www.polyvore.com/flotus_inspired/set?id=62020006" target="_hplink">FLOTUS wore a Thom Browne fit and flare dress for the third and final presidential debate.</a>

See what else the first lady has worn this year:

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  • December 2012

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  • December 2012

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  • December 2012

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  • December 2012

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  • December 2012

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  • December 2012

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  • November 2012

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  • November 2012

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  • November 2012

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  • October 2012

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  • October 2012

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  • October 2012

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  • October 2012

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  • October 2012

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  • October 2012

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  • October 2012

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  • October 2012

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  • September 2012

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  • September 2012

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  • September 2012

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  • September 2012

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  • September 2012

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  • September 2012

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  • September 2012 in Diane Von Furstenberg

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  • August 2012

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  • August 2012

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  • August 2012

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  • August 2012 in Barbara Tfank

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  • August 2012

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  • August 2012

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  • August 2012 in Bibhu Mohapatra

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  • August 2012

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  • August 2012

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  • July 2012

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  • July 2012

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  • July 2012 in Tracy Reese

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  • July 2012

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  • July 2012

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  • July 2012

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  • July 2012

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  • July 2012

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  • July 2012 at the Olympics

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  • July 2012 in Talbots

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  • July 2012

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  • July 2012

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  • July 2012

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  • July 2012

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  • July 2012

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  • June 2012

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  • June 2012

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  • June 2012

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