"The X Factor" stars from the U.S., U.K. and Australian editions of the show rang in 2013 in different parts of the world. They also tweeted New Year's Eve/New Year's Day messages to fans. Here's a summary of what some of the stars did for their New Year's Eve celebrations:
Simon Cowell ("The X Factor" executive producer) was in Barbados, where he has been vacationing with his ex-girlfriends Sinitta, Jackie St. Clair and Mezhgan Hussainy.
Harry Styles of One Direction ("The X Factor" U.K. third-place place finalist in 2010) was in New York City, where he went to a Jay-Z/Coldplay concert in Brooklyn before heading to Times Square in Manhattan to watch his girlfriend Taylor Swift perform for ABC's "Dick Clark's New Year's Rockin' Eve With Ryan Seacrest." (Click here for more details.) He tweeted: "Happy New Year! To everyone who has supported us, We can never thank you enough. We know we can't do this without you. We love you all. It's 2013."
Louis Tomlinson of One Direction ("The X Factor" U.K. third-place place finalist in 2010) had a party in his hometown of Doncaster, England. He tweeted: "Happy new year everyone. Thank you for making the last year so special ! Also thank to everyone who came to the party last night was such a good way to spend New Year's Eve!" According to The Sun, the party had a photo booth, and the backyard was turned into a ice-skating rink.
Niall Horan of One Direction ("The X Factor" U.K. third-place place finalist in 2010) was in his home country of Ireland. He tweeted: "Happy New Year guys! Thanks for 2012! 2013 let's gooo."
Liam Payne and Zayn Malik of One Direction ("The X Factor" U.K. third-place place finalist in 2010) were in England. Payne tweeted: "Wowww im looking forward to 2013!Thank you for all your support in 2012,its been a year i will never forget! Love you all! Happy new yearrrr." Malik tweeted: "Just want to say to you all thank you for an absolutely amazing 2012. You guys have made the last few years incredible. We wouldn't be where we are now without you all! So Happy 2013! Love you all! :) x"
Britney Spears ("The X Factor" U.S. judge) was at home in California with her two sons and recently adopted puppy Hannah. She tweeted: "Spending a quiet New Years Eve in with my boys and little miss @hannahspears. Let's hear some interesting resolutions for 2013?"
Demi Lovato ("The X Factor" U.S. judge) was in Punta Mita, Mexico. On New Year's Eve, she was in a positive and upbeat mood. She tweeted: "Two years ago, I watched the ball drop on TV in rehab and cried my eyes out. Tonight I'm on the beach with my closest, most loyal friends... sipping coffee and sharing how beautiful life is and how far we've come. Recovery is a beautiful thing friends. Life is good, God is great! Everyone please be careful and smart tonight. [New Year's] is about celebrating the past year and the year to come. Set goals and dream big #2013... By the way - just reminding teens out there that you don't have to drink on [New Year's] to have fun. Be the difference."
But by New Year's Day, Lovato seemed to be in a very bad mood. She tweeted: ""Nothin like heading to the airport 5 hours after the ball drops!! I'm still awake.... Customs SUCKS. Need to sleeeeeeeeppppp.. Why are people smiling right now? What is this?! IT'S TOO EARLY FOR SMILING!!!!!!! Stop smiling at me.."
Olly Murs ("The X Factor" U.K. second-place finalist in 2009) was in London, where he played DJ at his own party. He tweeted: "HAPPPPPPPY NEW YEARRRRRRRR!! #2013 Bosh. Gutted party is over #DJmurs was in full flow.. Up next was 'Mark Morrison' Return of the mack.. #tune #timeforadrunkenwalk"
Leona Lewis ("The X Factor" U.K. 2006 winner) was in Beijing for a performance. She posted backstage photos on her Twitter account.
Tate Stevens ("The X Factor" U.S. 2012 winner) was in Las Vegas to perform at Mandalay Bay on Fox's "New Year's Eve Live!" He tweeted: "Good morning! And Happy New Year to everyone! Can't wait to see what 2013 brings!"
Samantha Jade ("The X Factor" Australia 2012 winner) was in Perth, Australia, where she performed at The Crown. She tweeted: "Happy new year everybody !!!!! 2012 was incredible to me and I am so grateful to have the incredible support I have ! 2013 here we go!!!!! X Aah! Happy new year! Can’t wait to hit the road @thexfactor_au!! x #xfactorlivetour."
JLS ("The X Factor" U.K. second-place finalist in 2008) tweeted New Years' greetings, and JB Gill of JLS said he spent the holiday in Sydney with his girlfriend Chloe Tangney: "Just had new years at Sydney opera house with @ChloeTangney !happy new year!!!fireworks were AMAZING!j"
"HAPPPYYYYY NEWWWW YEAARRRRRRRR!!!!!!!!! ORI X" "
"Happy new year everyone!! Another year gone crazy right! Heres to bigger better and more amazing! Always love Ax"
JLS also posted a New Year's 2013 greeting on YouTube. (Click here to watch the video message.)
Alexandra Burke ("The X Factor" U.K. 2008 winner) was in Miami, where she saw Drake perform and hinted that she had a hangover on New Year's Day. She tweeted: "Happy new year guys.. With love, from Miami xx Drake killed it last night! Amazing opening to the year!!! #2013 #TheMorningAfterTheNightBefore head is spinning !!!!"
Melanie Brown ("The X Factor" Australia) judge was in Sydney, where she watched fireworks with her husband and three daughters. She tweeted: "Happy new year yippee sydney fireworks da bomb!! Love our family and goodbye 2012 hello 2013."
Mario Lopez ("The X Factor" U.S. co-host) was in New York City, where he and his wife, Courtney Lopez, participated in Nivea's New Year's Eve celebration in Times Square. The Lopezes were ambassadors for Nivea's "Kiss of the Year" contest which had the winner getting an all-expenses paid trip to New York City on the Nivea Kiss Stage in Times Square on New Year's Eve. He tweeted a photo of himself kissing Courtney in Times Square with this message: "New Years Eve kiss in the heart of Times Square in NYC with @CourtneyMLopez ... #Priceless #FelizAnoNuevo #Beso."
And here are some other New Year's greetings tweeted by "X Factor" stars:
Little Mix ("The X Factor" U.K. 2011 winner): "Happy new year to all !!"
Gary Barlow ("The X Factor' U.K. judge): "Here we go 2013 ! Don't forget itv1 tonight 9pm !! Peter Kay, James cordon, JLS, Nicole Scherzinger and Marky Owen all on stage with me. I hope you all enjoyed the show ! Thanks to all my guests and the amazing audience at Manchester Apollo !"
Nicole Scherzinger ("The X Factor' U.K. judge): "#HappyNewYear! Here's to making more memories and history in 2013..God Bless!!!"
Cher Lloyd ("The X Factor" U.K. fourth-place finalist in 2010): "Happy new year everyone!!! Xxx Thank you so much for all the support my fans gave me in 2012, couldn't have done it without you!! Let's hope this years a great one! (: xxx"
Guy Sebastian ("The X Factor" Australia judge): "Happy new year everyone hope you are all bringing in the new year in style and surrounded by peeps u love!"
Ronan Keating ("The X Factor" Australia judge): "I wish I had something better to say but nothing can capture it better than HAPPY NEW YEAR."
Natalie Bassingthwaighte ("The X Factor" Australia judge): "HAPPY NEW YEARS TO ALL."
Luke Jacobz ("The X Factor" Australia host): "Ok everyone- battery is dying- so ill say this now- happy new year!! Love to everyone's family and I wish you a safe and fun new year!! Finally charged my phone happy newyear everyone!"
Khloe Kardashian ("The X Factor" U.S. co-host): "Happy 2013 my loves! Lamar and I are so excited for a new year. Can you guess what our next fragrance is called?"
Dermot O'Leary ("The X Factor" U.K. host): "Had a great NYE with the wife, 2 Italians, a couple of Dutch,Bhutan Whisky and a dog called Freddie... 'sausages'Hope you all enjoyed yours."