Thursday, September 22, 2011 at 9:50 PM 
Photo by Mandel Ngan / Getty Images
The President and First Lady returned to Washington, D.C. last evening after attending the U.N. General Assembly in New York City. For the return trip, Mrs. O donned one of her Isabel Toledo dresses, last seen in 2009, here.
Isabel Toledo 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 Wednesday, September 21, 2011 at 7:32 PM 
Photos by Allan Tannenbaum and Mandel Ngan / Getty Images
The President and First Lady attended a DNC fundraiser at Gotham Hall in New York City last evening. On the fashion front, Mrs. O wore a black tuxedo-inspired cocktail dress to introduce her husband. Completing the look were three diamond bangle bracelets by jewelry designer Katie Decker.
Katie Decker Wednesday, September 21, 2011 at 7:54 AM 
Photo by Mandel Ngan / Getty Images; Photo courtesy of Byron Lars Beauty Mark
For those curious about the dress Mrs. O wore for 9/11 ceremonies, the answer is: Byron Lars Beauty Mark. Lovely!
Byron Lars Monday, September 19, 2011 at 7:25 PM 
Photos by Mandel Ngan, Nicholas Kamm / Getty Images, Kevin Lamarque / Reuters Pictures
The President and First Lady traveled to New York City today for the United Nations General Assembly. On the fashion front, Mrs. O mixed bold print and color in her ensemble. A multi print silk placket dress by Duro Olowu, last seen on Oprah, here, was paired with a vibrant yellow cardigan, red belt and orange flats. A structured navy bag completed the early autumn look.
P.S. Here's to the new season from the White House squirrel! This photo was snapped as the President and First Lady left Washington.
Duro Olowu