http://mrs-o.com/newdata/2011/9/21/tuesday-night-at-gotham-hall.html
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.
Way to go Maggie! Thanks to Matt for linking it.