Mad Hatters: 13 Ridiculous Royal Wedding Hats

Princess Gaga!
Princess Beatrice of York, daughter of Prince Andrew and the much-maligned Sarah Ferguson, is not known for her subtle taste in clothes. But when she arrived at the wedding of her first cousin, Prince William, with an enormous taupe O tacked to her forehead, the effect was so startling that the hat/cow catcher immediately spawned its own Facebook page with thousands of fans.

• Scenes from Prince William and Kate Middleton's Wedding Day