After dating off and on for 8 years, Kate Middleton (wearing an instantly iconic Alexander McQueen gown) and Prince William made it official on April 29, 2011 in a ceremony watched by billions all over the world. The only less-than-enthusiastic viewer? 3-year-old flower girl Grace Van Cutsem (Prince William's goddaughter), who covered her ears as planes from the RAF flew overhead. Another scene-stealer? Hot maid of honor, Pippa Middleton!