Who Invited the Mad Hatter?

While Kate Middleton looked like a perfect princess as she walked down the aisle in a Sarah Burton designed for Alexander McQueen dress, the actual princesses in attendance almost stole the show. Wearing hats at weddings is a long-standing British tradition, but the Princesses Eugenie and Beatrice of York took that tradition to new heights. Wearing Philip Treacy hats, the princesses hats soared almost a foot above their heads. What were they thinking when they looked at themselves in the mirror? And, more importantly, how did they keep them on their head? Just another royal mystery.