Michelle Obama dazzled in a ruby red gown at the inaugural balls Monday night.
The softly pleated dress was created by Jason Wu, the young Taiwanese-born designer behind the one-shouldered white silk chiffon gown that she wore to the inaugural balls in 2009.
That white gown is on display at the Smithsonian National Museum of American History in Washington.
"People have always looked at what the first lady wears," notes exhibit curator Lisa Kathleen Graddy. "She's a very public figure. She belongs to us. She represents us, and so we're interested in how she presents herself.
Laura Bush wore a silvery gown to celebrate George W. Bush's second inaugural in 2005.
The Smithsonian exhibit also features Hillary Clinton's beaded lace gown, worn in 1993. Also on display: the Hollywood glamour of Nancy Reagan's one-shouldered gown in 1981, so different from Rosalynn Carter in 1977, who wore a chiffon dress she had worn several years earlier.