I have never seen her in anything but a skirt below her knees. Show me.
Michelle is most often in a dress. She is also a fairly tall lady.
http://i131.photobucket.com/albums/p316/francislholland/MichelleObamaFotoLarge.jpg
http://a.abcnews.com/images/GMA/nm_michelle_obama3_080707_ssv.jpg
http://imgs.sfgate.com/c/pictures/2008/06/14/mn-michelle14_jump_0498624224.jpg
Here’s a link: