Bruno Mars to Perform on X FACTOR's Results Show, 12/13

Related: THE X FACTOR, FOX, Reality TV

Grammy Award Winner Bruno Mars will perform on THE X FACTOR results show on Thursday, December 13. The show's Two-Night Finale airs Wednesday, December 19 and Thursday, December 20.

After last night's elimination of CeCe Frey and Diamond White, only the Top Four acts remain in the competition: Tate Stevens (mentored by L.A. Reid), Carly Rose Sonenclar (mentored by Britney Spears), Emblem3 and Fifth Harmony (both groups mentored by Simon Cowell).

With only two performance shows left in the season, tune in next week, Wednesday, Dec. 12 (8:00-10:00 PM ET live/PT tape-delayed), when the Top Four finalists battle it out in the semifinals. Tune in to the LIVE results show the following night, Thursday, Dec. 13 (8:00-9:00 PM ET live/PT tape-delayed), as hosts Khloé Kardashian Odom and Mario Lopez announce the next act eliminated from the competition. Plus, don't miss a special performance by Grammy Award winner Bruno Mars.

All this excitement leads up to THE X FACTOR two-night grand finale airing Wednesday, Dec. 19 (8:00-10:00 PM ET/PT) and Thursday, Dec. 20 (8:00-10:00 PM ET/PT) on FOX, when a new winner is crowned! The star-studded two-night event will feature special performances, surprise guests and more before America's vote is revealed.

The Top Four Finalists Are:

Tate Stevens Age: 37 Hometown: Raymore, MO Mentor: L.A. Reid Keep up with Tate at: Twitter: @tatestevensctry Facebook: www.facebook.com/TateStevensofficialfanpage

Carly Rose Sonenclar Age: 13 Hometown: Westchester, NY Mentor: Britney Spears Keep up with Carly at: Twitter: @CarlyRoseMusic Facebook: www.facebook.com/carlyrosesonenclar

Emblem3 Drew Chadwick Age: 20 Hometown: Huntington Beach, CA Keaton Stromberg Age: 16 Hometown: Huntington Beach, CA Wesley Stromberg Age: 19 Hometown: Huntington Beach, CA Mentor: Simon Cowell Keep up with the Emblem3 at: Twitter: @Emblemthree Facebook: www.facebook.com/EmblemThree

Fifth Harmony Ally Brooke Age: 19 Hometown: San Antonio, TX Camila Cabello Age: 15 Hometown: Miami, FL Normani Hamilton Age: 16 Hometown: Houston, TX Dinah Jane Hansen Age: 15 Hometown: Santa Ana, CA Lauren Jauregui Age: 16 Hometown: Miami, FL Mentor: Simon Cowell Keep up with Fifth Harmony at: Twitter: @FifthHarmony Facebook: www.facebook.com/fifthharmony

Bruno Mars is a 14-time Grammy Award nominee who has sold more than 45 million singles worldwide and has more than one billion views on YouTube. Mars first achieved worldwide visibility and success as a featured writer/producer/singer on two massive summer hits in 2010 (McCoy's "Billionaire" and B.o.B's "Nothin' On You"). His debut album, "Doo-Wops & Hooligans" was released in October 2010 and has been certified 39x platinum worldwide. The album included the 12x platinum blockbuster single "Just the Way You Are," which hit No. 1 in multiple countries across the globe and won the critically acclaimed artist a Grammy Award for Best Male Pop Vocal Performance. "Doo-Wops & Hooligans" claimed two additional hit singles: the 10x platinum "Grenade" and 6x platinum "The Lazy Song." Following his worldwide success with "Doo-Wops & Hooligans," Mars created the critically acclaimed ballad "It Will Rain" for the original motion picture soundtrack for "The Twilight Saga: Breaking Dawn - Part 1."

On Dec. 11, Mars will release his highly anticipated sophomore album, "Unorthodox Jukebox," including the singles "Locked Out of Heaven" and "Young Girls." Mars and his songwriting/production team The Smeezingtons (Mars, Philip Lawrence, Ari Levine) partnered with heavyweight producers, including Jeff Bhasker, Mark Ronson and Diplo to create the 10-track album. Mars has received an abundance of accolades to date, including ASCAP Song of the Year, a Billboard Music Award for Top Radio Song for "Just the Way You Are," a BRIT Award for International Male Solo Artist, an American Music Award for Favorite Male Artist in Pop/Rock, two MTV European Music Awards, including Best New Artist and the People's Choice Award for Favorite Male Artist. In 2011, Mars was named one of Time magazine's 100 most influential people in the world. Exclusive tracks from "Unorthodox Jukebox" available now on iTunes at http://smarturl.it/looh.

Immediately after the performance show, fans will be able to vote via 1) Verizon Touch Voting on The Xtra Factor App on Verizon Android devices; 2) toll-free calling; 3) text messaging for Verizon Wireless customers; and 4) online at TheXFactorUSA.com. Fans with valid Facebook accounts can also vote at Facebook.com/TheXFactorUSA.

THE X FACTOR was created by Syco Television and is produced by Syco Television and FremantleMedia North America. Rob Wade and Nigel Hall are executive producers for Syco Television. Trish Kinane, Richard Holloway and Andrew Llinares serve as executive producers for FremantleMedia North America. "Like" THE X FACTOR on Facebook at www.Facebook.com/TheXFactorUSA. Follow the series on Twitter @TheXFactorUSA and join the discussion at #xfactor.