Where your favorite celebs will be partying Monday night to ring in the new year:MIAMI
Shore Club: Ashlee Simpson and Pete Wentz, with a performance by Eve
Mansion: Kim Kardashian
Setai: Jennifer Hudson
The Raleigh Hotel: Mandy Moore, Chace Crawford, Kristen Bell, Dax Shepard, Elisha Cuthbert, Jeremy Piven, Samantha Ronson
Opium Garden: Nick Cannon
Hotel Victor: Adrian Grenier
Sagamore Hotel: Shannon Elizabeth
NEW YORK CITY
Tenjune: Ryan Seacrest
Times Square: Carson Daly, Lenny Kravitz, Alicia Keys, Miley Cyrus, Carrie Underwood, Joel Madden, Ryan Seacrest
Hammerstein Ballroom: Slash, Velvet Revolver
MTV Party, Times Square: Tila Tequila
LAS VEGAS
LAX: Paris and Nicky Hilton, DJ AM, Criss Angel
Tangerine: Kevin Federline
Tao: Mariah Carey
Pure: Rick Salomon and Pamela Anderson
Body English, Hard Rock Hotel: Backstreet Boys
Prive, Planet Hollywood Resort: Avril Lavigne
Moon, The Palms: Jaime Pressley
Rain, The Palms: Dave Navarro
LOS ANGELES
Les Deux: Travis Barker
Playboy Mansion: The Girls Next Door's Holly Madison, Bridget Marquardt and Kendra Wilkinson
House Parties: Kate Walsh and Scarlett Johansson
Party For The Cause to benefit AIDS research, Woodland Hills, California: Vanessa Williams
San Diego's McClellan-Palomar Airport: Lauren Conrad and Audrina Patridge