From Julianne Hough's 'Crazy Eyes' blunder to Matt Lauer's terrifying Pam Anderson, these are some of the worst celebrity Halloween costume offenses ever committed.
Things not to do when you're third in succession to the British royal throne: get drunk and naked in Vegas while near any sort of photographic equipment. Unfortunately for Prince Harry, he learned this the hard way last summer -- and is just now responding to the mini-scandal that ensued.