If you've noticed that all of your favorite celebrities seem to have fled sunny Los Angeles in favor of freezing New York, it's for one reason and one reason alone: New York Fashion Week. And after all that hard work sitting front row at fashion shows all day, they are looking to let loose. Luckily, there is no lack of cocktails, dinners, and full-on ragers to let loose at. It all kicked off on Wednesday night with the 2019 amfAR New York gala, which honored the likes of Milla Jovovich and photographer duo Mert & Marcus, and brought out big names like Kim and Kourtney Kardashian, Karen Elson, From there, it just kept going, with Thursday night drawing a downtown crowd uptown with soirees at Saks and Fendi. Saturday night was a masterclass in contrasts: up first, a cocktail party for Tiffany & Co with Kendall Jenner, and then, at the unique location of Midtown's Rainbow Room, a full on rager, courtesy of Alexander Wang. Making the rounds: Kaia Gerber, Bella Thorne, Kendall Jenner, Rowan Blanchard, Lana Condor, and more. Here, go inside the very best and most exclusive parties of the week.