Miley Cyrus to Guest Judge on 'American Idol,' 3/23

Miley Cyrus will appear as a guest mentor on AMERICAN IDOL and help the Top 11 finalists - Didi Benami, Crystal Bowersox, Lee Dewyze, Andrew Garcia, Casey James, Aaron Kelly, Michael Lynche, Siobhan Magnus, Paige Miles, Katie Stevens and Tim Urban - prepare for their performances on a Billboard No.1 Hits-themed show airing Tuesday, March 23 (8:00-10:00 PM ET live/PT tape-delayed) on FOX.

Tune in to the results show the following night, Wednesday, March 24 (9:00-10:00 PM ET live/PT tape-delayed), to see Cyrus perform her hit "When I Look At You," watch Joe Jonas and Demi Lovato sing "Make A Wave," and find out who receives enough votes to stay in the competition and who is sent home.

Cyrus is the youngest-ever multi-platinum recording artist to have four No. 1 albums in less than three years. Her recently released EP, "The Time of Our Lives," features the No. hit "Party in the USA." Cyrus will next be seen on the big screen in "The Last Song," written by Nicholas Sparks and opening March 31. She also stars in the hit series "Hannah Montana," currently in its fourth season. The teen sensation is also the bestselling author of "Miles To Go," which shares her inspiring story, spanning from her Tennessee roots to her record-setting triumphs in TV, music and film. Additionally, Cyrus and designer Max Azria of apparel house BCBGMAXAZRIAGROUP, Inc. have teamed up to create Miley Cyrus & Max Azria, a new apparel line exclusive to Walmart.

Jonas, who appeared as a guest judge at the AMERICAN IDOL 9 auditions in Dallas, is a member of the Grammy-nominated Jonas Brothers along with his brothers, Kevin and Nick. The group debuted their third album, "A Little Bit Longer," at No.1 in August 2008 and has since gone Platinum in the United States and Platinum or Gold in 27 nations outside the U.S. With its debut, Jonas Brothers became the first group to have three albums in the Top 10 in a single week. Their current album "Lines, Vines and Trying Times," produced by John Fields, debuted at No.1 on the cable movie "Camp Rock 2: The Final Jam." He also stars as Joe Lucas, the fearless, attention grabbing lead singer of the group in the comedy series "JONAS," entering its second season in 2010.

Lovato is a talented musician whose sophomore album, "Here We Go Again," debuted in July 2009 appearing at No.1 on the Billboard 200, selling over 107,000 units in the first week. Her first album, "Don't Forget," was released in September 2008 and debuted at No. 2 on the Billboard 200. In Summer 2009, Lovato headlined her first tour, featuring special guest David Archuleta. Currently, Lovato stars as Mitchie Torres in the highly anticipated cable movie "Camp Rock 2: The Final Jam," a sequel to the hit movie "Camp Rock" which delivered a Platinum-certified soundtrack and introduced Lovato as a musical powerhouse.

She also stars as Allison "Sonny" Munroe on the popular comedy series "Sonny With A Chance."

AMERICAN IDOL is created and executive-produced by Simon Fuller, founder of 19 Entertainment; and executive-produced by Cecile Frot-Coutaz, CEO, FremantleMedia North America; and Ken Warwick, executive producer, FremantleMedia North America.

Visit americanidol.com for exclusive videos, interviews and photos of the finalists as well as special behind-the-scenes information and all of your AMERICAN IDOL news.