Culminating a lengthy build-up, Fox announced Sunday that Paula Abdul will indeed be joining Simon Cowell on the judges panel of his new TV show, "The X Factor."

"This show would never have been the same without Paula and I can' t believe I am saying this -- I have missed her a lot, and I am thrilled she' s on the show," said Cowell.

Abdul, whose playful bickering with Cowell became a signature of "American Idol," joins Steve Jones (um, who?) and Nicole Scherzinger, who Fox also announced will co-host the U.S. version of the British show.

Jones is a British TV personality little known in the U.S., and Scherzinger is a former Pussycat Dolls lead singer and solo artist.

"These two are going to be great together," Cowell said. "I have always wanted Steve to work with us; I think he is a real star. Nicole is fantastic. I loved working with her on the U.K. " X Factor" last year. She is gorgeous and super-talented."

Jones and Scherzinger join previously announced judges Cowell, Cheryl Cole, and Antonio "L.A." Reid. The show debuts in September.

Auditions are ongoing in Dallas and will continue on Thursday.