Heidi Montag went on David Letterman last night and totally gave her side of the story on the whole Lauren Conrad sex tape thingy. Strangely, suddenly we kind of believe her! She comes off as weirdly well-spoken and eloquent for being such a dumb-dumb in actuality. Anyway, too bad she showed up wearing the most horrendous outfit ever made. A negligee dress and gold shoes? Girl, put it away.