The First Lady spoke at the Smithsonian's Cooper-Hewitt National Design Awards luncheon at the White House yesterday. For the appearance, Mrs. O wore a slim white sheath dress paired with a statement jeweled necklace.
In her remarks the First Lady commented: "It is always a pleasure to be here with all of you today as we recognize this year’s winners of the National Design Awards. Every day, these visionary designers are pushing boundaries, creating and revealing beauty where we least expect it, and helping us all lead healthier, more sustainable lives."
American designer Thom Browne was honored with the award in Fashion Design. In addition to his eponymous menswear line, Browne designs Black Fleece by Brooks Brothers, which the First Lady recently wore here.
Update: Mrs. O wears an Alexis Bittar Spring 2012 Elements Collection necklace with a white Narciso Rodriguez dress. The necklace is described as "a pave accented gold woven pendant and linked stone necklace".