Amercian Idol gets a Forth Judge

...and it's gonna be songwriter Kara DioGuardi. She's writen songs for some major artists including, Christina Aguilera hit "Aint No Other Man" off her current album "Back to Basics" on which Kara co-wrote half the songs. She has also co-wrote Kelly Clarkson’s “Walk Away” (a Top 15 song on the Hot 100 Billboard charts), as well as Clarkson’s next single “Gone.” Other current singles include “Beep” (a Top 15 song on the Hot 100 Billboard charts), co-written with Will.I.Am and "I don't Need a Man" for the Pussycat Dolls, Ashlee Simpson’s hits “L.O.V.E.” (a Top 10 airplay song) and “Boyfriend” ( a Top 20 Hot 100 Record); and Bo Bice’s eponymous song “The Real Thing.” Kara also co-wrote the first Santana single “I’m Feeling You,” featuring Michelle Branch, as well as the forthcoming single “Cry Baby Cry,” featuring Sean Paul and Joss Stone. Other recent songs include: "Good Day" by Jewel; "Escape" by Enrique Iglesias; "I Belong To You" by Anastacia; "Unpredictable; Not Me, Not I" by Delta Goodrem; "Shut Up" by Kelly Osbourne.