How do they do that?

Amidst all of the hype surrounding the Royal Wedding, not a single media segment about how those darn hats STAY ON!? Fashion reporters and style watchers, you have let me down. They defy physics and I can't take my eyes off them. This blooming blue crescent moon was stunning; definitely one of my favorites. What sort of surprised me is that hats are required yet there appears to be no requirement for them to match what the woman is wearing! A good portion of the women in attendance were impeccably coordinated, of course, but then a select few hats were laugh-out-loud color and texture clashes. It made for fun television viewing. The actual ceremony? Not so much. All hail...TiVo.