Today is a big day in MObama fashion. The First Lady unveiled a new hairdo when she attended a celebration of country music at the White House with Barack last night. She may have pinned it under in the back, or cut it, or pinned and cut it. Naturally debate is raging in the blogosphere about what exactly she did: Fashionista thinks she cut it, but Radar Online thinks she just swept it back. She's been wearing it up a lot lately so it wouldn't be surprising if she did finally decide to take a bit off. She also wore a tea-length embroidered white-cotton Michael Kors dress. See the full look in the Michelle Obama Look Book.