Last night after posing and preening at the Metropolitan Museum of Art for the Costume Institute Gala, guests head to Crown for the official after party. Guests, including Sir Paul McCartney, Madonna, Gwyneth Paltrow, Naomi Campbell, and Karl Lagerfeld stopped worrying about cameras or if their clothing was hanging right and let their hair down and cut loose. Vogue was on hand to record the moment.  

[Lance Armstrong, Madonna]

[Karl Lagerfeld]

[Matthew Morrison, Ryan Murphy,  Gwyneth Paltrow]

[Joan Smalls, Prabal Gurung, and Karmen Pedaru]

[Jay-Z, Beyonce]

[Lance Armstrong,. Naomi Campbell]

[Brooklyn Decker, Aziz Ansari]

[Rosario Dawson]

[Bruno Mars, Janelle Monae]

[Patricia Clarkson, Elizabeth Banks]

[Images Via Vogue]