As first lady of the United States, Michelle Obama already has a pretty coveted position. But she nabbed another one this month when she became iVillage's first-ever guest editor. For one week, the first lady curated and contributed to the site's content about getting ready for back-to-school on their Food, Parenting and Health channels and shared personal family photos. "As children across the country get ready to go back to school, this is an exciting -- and sometimes overwhelming -- time for American families," Michelle said. "As guest editor, I hope to start a community dialogue on this topic so we can all share tips and advice to get our kids off to a great start in this new school year and help our families be healthier."