Tuesday, September 11, 2012 at 9:20 PM 
The president and first lady marked the 11th anniversary of 9/11 with a moment of silence at the White House today, followed by visits to the Pentagon Memorial and Arlington National Cemetery. Throughout the day, Mrs. O wore a custom Peter Som ensemble from Fall 2010.
Peter Som Thursday, April 5, 2012 at 5:46 PM 
The First Lady visited with families at Walter Reed National Military Medical Center in Bethesda, Maryland yesterday. On the fashion front, Mrs. O wore a Peter Som print top, yellow cardigan and trousers. The blouse is from the designer's Spring 2010 collection, last seen on the first lady here.
Peter Som Wednesday, February 22, 2012 at 7:35 PM 
The President and First Lady attended the groundbreaking ceremony of the Smithsonian National Museum of African American History and Culture in Washington, D.C. today. The museum is scheduled to open in 2015. On the style front: Mrs. O wore a Peter Som dress and custom coat. Mary Jane kitten heels completed the look.
Peter Som Tuesday, November 15, 2011 at 11:50 AM 
Photo by Saul Loeb / Getty Images
The First Lady debuted a basket weave print dress to attend a "Hiring our Heroes" jobs fair for military veterans and spouses in Hawaii yesterday.
Update: Mrs. Obama wears a custom Peter Som dress.
"Michelle Obama Reaches Out to Military Women" [NY Times]
Peter Som Wednesday, September 21, 2011 at 7:41 PM 
Photo by Don Emmert / Getty Images
The First Lady watched as the President addressed the 66th General Assembly session at the United Nations in New York today. Mrs. O wore a Peter Som Fall 2010 dress and custom coat last seen in London during May 2011. A Henry Schreiner brooch from House of Lavande completed the look.
House of Lavande, Peter Som