Vanity Fair kicked off the Tribeca Film Festival with their annual opening party last night, which brought out some of our favorite fashion forces in all of their stylish glory. Rachel Roy and Karolina Kurkova both sported the popular menswear trend, while Sienna Miller opted to go slightly more feminine for the evening. Click through to see our favorite looks from the Vanity Fair party, as well as a few other great events that took place in NYC last night.