When word got out that Britney Spears was making a “surprise appearance” on The Late Show with David Letterman a few blocks away, we here at BWE pretended we were paparazzi and ran our asses over there to catch a glimpse. Well, we caught more than a glimpse. Here are a couple of pictures and a video of Britney leaving the Ed Sullivan Theater with her favorite Federline in her arms. And a giant Barbie wig on her head. Check it out.