Kevin Bacon, Kyra Sedgwick, and Natalie Zea walk the red carpet at a screening event for "The Following"; Portia de Rossi, Jason Bateman, Will Arnett and the rest of the Bluth clan celebrate the Season 4 premiere of "Arrested Development" (!!!) and we could not be more excited; Judd Apatow, Carl Reiner, and Mel Brooks kick off #ComedyFest; Roxane Mesquida, Josephine de la Baume, and others hit a special screening for Kiss of the Damned; Princess Alexandra Von Furstenberg, Angella Nazarian, and more attend the Women A.R.E. Salon event—get the rundown on Monday's top events in this installment of Last Night's Parties.

Sundance 2013 kicked off this weekend, and film buffs flocked to Park City again this year. From Dave Groh's sold-out concert at Park City Live with Stevie Nicks, to Jessica Biel and Ringo Starr hanging out at The Westway, to Avicii and Matisyahu's blow out performances, here is a round up of some of the top bashes from Sundance's first weekend.