Want to know where to rub elbows with rockstars as they ring in the New Year? We've got you covered. Perhaps the most star-studded event of the weekend takes place in Sin City with Jay-Z and Coldplay ringing in 2011 with a joint concert at the official grand opening of The Cosmopolitan, a $3.9 billion Las Vegas Strip hotel. But the question remains, will Beyoncé and Gwyneth Paltrow join their husbands for a New Year's kiss at the Marquee grand opening, which is where the post-show party is.
And what would New Year's Eve be without "New Year's Rockin' Eve" in The Big Apple? Ryan Seacrest hosts the annual party in Times Square that features performances by Ke$ha and Taio Cruz. Jenny McCarthy will also be on hand looking for someone to smooch. Over at MTV's New Year's Bash, Flo Rida is set to perform twice and Jersey Shore's Nicole "Snooki" Polizzi will be placed inside a ball that will drop in Seaside Heights, N.J., as the clock ticks down to midnight.
Other New Year's Eve events include:
LAS VEGAS Rihanna will host a New Year's Eve party at Las Vegas's Pure Nightclub.
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E!'s Holly Madison hosts at LAVO Las Vegas. Will she be joined by her new boyfriend, Jack Barakat from pop-punk band All Time Low?
Diddy hosts at Luxor's LAX. Will he make a stop to preview Savile Row, an intimate member's-only club adjacent to LAX that's also opening that night?
Nelly performs his hit song "Just a Dream" at Haze Nightclub.
Jay Sean will perform and ring in 2011 at The Bank.
Ludacris will lead the countdown to Midnight at Vanity.
2010 breakout star B.O.B will perform his hit song "Airplanes" at Jet Nightclub.
CHICAGO Pete Wentz will be hosting a private celebration at the Hard Rock Hotel on behalf of CIROC.
MIAMI Drake performs poolside at Wall inside the W Hotel in South Beach.
Kourtney Kardashian hosts the CIROC New Year atop of the Gansevoort Hotel.
Chace Crawford and Lauren Conrad will be on hand to see Jamie Foxx perform inside LIV Nightclub, while international superstar DJ Tiesto performs poolside at Fontainebleau.
Nicki Minaj will countdown to 2011 with an "All Pink Everything" party at Mansion, featuring cotton candy machines and pink Harajuku barbies.
Crooner Jason Derulo hosts the Joonbug.com party at The Eden Roc in a Beach-side bash, before heading to Las Vegas's Vanity on New Year's Day.
Mondrian in South Beach will ring in the new year with DJ Paul Sevigny, with his sister Chloe Sevigny & The Misshapes poolside. Meanwhile, Andrew Wyatt will perform bay front.
NEW YORK Seven-time Grammy nominee Bruno Mars will perform at Renaissance Times Square.
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Bravo stars Andy Cohen, Sandra Bernhard, Megan McCain and several of your favorite "housewives" will be on hand for Bravo's Andy Cohen New Year's Party at the Bravo Clubhouse.
Following the ball dropping, Jersey Shore cast members will be hosting afterparties throughout the city – Snooki hosts at Madame Tussauds; Pauly D at Espace; Jwoww at Amnesia.
LOS ANGELES Songstress Kimberly Cole performs live at The Colony as part of the Colony Royale New Year's Eve party.
David Arquette and showman Jeff Beacher will bring out the stars with a preview performance of Beacher's Madhouse, the duo's vaudeville-inspired production at The Hollywood Roosevelt that features over-the-top acts, which includes live animals, acrobats, contortionists and fire-breathers.