Celebrity Celebrity Parties: December 27, 2013 to January 2, 2014 By InStyle Editors InStyle Editors Facebook Instagram Twitter Our editors and writers comprise decades of expertise across the beauty, fashion, lifestyle and wellness spaces in print and digital. We prioritize journalistic integrity, factual accuracy, and also having fun with every story we share. InStyle's editorial guidelines Updated on January 2, 2014 @ 04:32PM Pin Share Tweet Email Trending Videos Photo: Brian Killian/Getty Celebrity Parties: December 27, 2013 to January 2, 2014 01 of 02 Fergie Jason Kempin/DCNYRE2014/Getty hosted the West Coast segment of Dick Clark's New Year's Rockin' Eve with Ryan Seacrest 2014 at Sunset Gower Studios in Los Angeles. Sparking in a Rubin Singer gown, the singer was joined by performers Ariana Grande, Jennifer Hudson, Robin Thicke, Jason Derulo, and more. 02 of 02 Annamarie Tendler, John Mulaney, Nick Kroll and Amy Poehler Brian Killian/Getty celebrated the new year at Sleep No More New Year's Eve 2014 Party at The McKittrick Hotel in New York City. Fellow comedian David Cross and his wife, Amber Tamblyn, also joined Poehler for the night's festivities.