First Lady Michelle Obama left the White House for a couple of hours to attend her book signing that took place in DC. Her book American Grown is available at Barnes & Noble. She wore a Brooks Brothers Sweater, a J.Crew No. 2 Pencil Skirt, and finished it off with a classic nude slingback. The book has been selling out quickly and from the 5 start ratings & reviews, First Lady Michelle Obama is sure to be an inspiring role model across the globe.