Checking out the always-chic Leelee Sobieski at the New Museum Spring dinner and Katy Perry at Coach's annual evening of cocktails and shopping for charity, there was no denying it: benefit season has begun. Even better? They delivered their style A-game, too. Meanwhile, we kept our eye on Sydney Fashion Week's street-style set, covered the Kate Young For Target launch party, and even sneaked in a special "happy birthday" wish to one of our favorite supermodels. Lest we forget that this weekend is one of the most music-filled (and fashionable!) times of the year, we made sure you knew exactly what to pack to make this year's Coachella trip better than ever. All of this — and more — in our week in review.