This Week's Best Dressed
>> Spring party season is in full swing, bringing New York's fash pack out in droves. On Thursday, Ferragamo feted the reopening of its gorgeous 5th Avenue flagship by inviting Solange Knowles — divine in head-to-toe Ferragamo, of course— to spin records for a well-heeled crowd that included Sarah Reynolds, Lauren Remington Platt, and Genevieve Jones. br> Across the street, Cartier celebrated the opening of its "Cartier & Aldo Cipullo, New York City in the '70s" exhibit with a glam soiree that saw the likes of Arizona Muse, Lily Collins, and Charlotte Casiraghi. Later that evening, the party continued downtown, where Leigh Lezark (left) kept the crowd — which included Chanel Iman and Karlie Kloss, both in Cushnie et Ochs — dancing all night long. br> See pics from those events — plus, knockout looks from Amanda Brooks, Crystal Renn, Coco Rocha, Karen Walker, and more at a bevy of other occasions — here, in our best-of-the-week slideshow.