Tom Cruise's teenage son "C-Squared" DJs a set for $10k with Cobra Starship and Lupe Fiasco at the Big Bang, Hollywood's biggest New Year's Eve party; "Real Housewives of Orange County" host a super blonde and sparkly NYE at The Beverly; Pamela Anderson, Kim Kardashian, and Fergie host NYE parties in Vegas; SBE celebrates the new year at the opening of yet another Hyde in Vegas with Lauren Conrad, Joe Jonas and more; Stevie Wonder delivers a NYE concert Vegas-style for Kyle Richards and Tyrese—open wide because we're giving you all the details on how familiar faces partied at the biggest blowouts here in L.A. and Vegas to ring in 2012 in this major installment of Last Night's Parties, New Year's Eve 2012 edition!

Also, I had no idea Kim Kardashian and Adam Lambert were so close until I saw them together here. Cute! [Photo via]

Richie Akiva Janice Dickinson Wilmer Valderrama Scott Sartiano Mario Lopez Kanye West Lauren Conrad Eliza Dushku Tao Las Vegas benji madden Erin Fetherston New Year's Eve New Years Eve Parties Pamela Anderson Fergie Joel Madden Leona Lewis Kim Kardashian Rick Fox Steve Davidovici Lupe Fiasco Stephanie Pratt Kourtney Kardashian Las Vegas Stevie Wonder Joe Jonas emile hirsch Stephen Dorff Cobra Starship Jr. Josh Duhamel Brent Bolthouse Holly Madison NYE Parties Kris Jenner scott disick Tyrese Gibson ronnie ortiz-magro Mayer Hawthorne Sam Nazarian SBE Sofia Vergara Josh Hutcherson Amber Lancaster Adrianna Costa Jason Ritter Kyle Richards New Year's Eve Parties L.A. 2011 New Year's Eve Los Angeles New Year's Eve L.A. NYE L.A. NYE L.A. parties The Beverly Connor Cruise Victoria Asher Gabe Saporta Courtney Mazza Faye Resnick Mauricio Umansky Annie Ilonzeh MGM Grand Michael Pena Alexis Bellino Neal McDonough Damon Wayans Jr. Mark Ballas Nicholas Gonzalez DJ C-Squared New Years Eve 2012 New Years Eve 2012 Parties NYE 2012 parties 1Oak Las Vegas C Squared Big Bang New Year's Eve 2012 Hollywood & Highland Center DJ D-Wrek P Dubs Tim James Saleisha Stowers Christina Fulton Jheri Walker Ciroc New Year's Eve 2012 Party Hosted by Alexis Bellino & Tamra Barney Ciroc New Year's Eve 2012 Tamra Barney Jim Bellino Eddie Judge Pamela Anderson Hosts Final New Year's Eve Bash At Studio 54 At MGM Grand Studio 54 At MGM Grand Studio 54 at The MGM Grand Jon Rose DJ KidJay TAO Las Vegas New Year's Eve With Kim Kardashian TAO Las Vegas New Year's Eve 2012 Mike Snedegar New Year's Eve 2012 at Chateau Nightclub & Gardens Chateau Nightclub & Gardens DJ Luca "Digital Boy" Veronica Davidovici Nikki Diaz