'Twas one hell of a year for fashion, 2011. Alexander McQueen triumphed this year thanks to a pair of well-documented dresses and a bona fide cultural phenomenon at the Metropolitan Museum of Art. Christian Dior tried to rebound from a potential PR nightmare, to varying degrees of success. Diffusion lines easily out-shined their designer homes. An editrix reinvented herself amidst a sea of rumors without losing a beat. And underaged fashionistas grew up in front of our very eyes. Here are our picks for the 25 most memorable and stylish moments of 2011.