It's a big day! FIRST LADY MICHELLE OBAMA and SECOND LADY DR. JILL BIDEN will be here! The presidential wives are encouraging everyone to support military families and will share why it's so important. Also, during the campaign, Ellen started a fun dance battle between the President and First Lady -- now we'll see what moves they've got today! The Grammy-wining country music duo SUGARLAND is returning to perform their hit single "Stuck on You," from their brand new album. (thetvdb.com)