Mrs Obama is no stranger to public scrutiny over her fashion decisions, including exposing her bare arms or wearing expensive sneakers to a soup kitchen. When Anya Strzemien, style editor at The Huffington Post, saw Obama's shorts, she knew there would be interest.
''I thought the fact that she wore shorts was newsworthy because she's the first first lady to wear shorts on Air Force One,'' Strzemien said. ''I was interested as a newsperson because it was a first. A lot of things the Obamas have done have been firsts.''
Image: This August 16, 2009 file photo shows first lady Michelle Obama and daughter Malia Obama, walking off Air Force One at Grand Canyon National Park Airport in Tusayan, Ariz.
Images: Copyright AP . Unauthorised reproduction prohibited.
Obamas in international best dressed list