The Met Gala went down in NYC on Monday night, and we've already taken a look at the best dressed on the red carpet, as well as all the afterparty pictures. Now, we're ready to peek inside the Met Gala, where all sorts of celeb-on-celeb action went down. Take a look to see Gwyneth Paltrow, in Prada, hanging out with best pals Beyoncé Knowles, in Givenchy, and Stella McCartney-clad Cameron Diaz. Engaged duo Jessica Biel and Justin Timberlake kissed for the cameras, and Kristen Stewart made the rounds chatting up A-listers. Click through to see all the action!