Fergie is in the running for a judge's spot on the upcoming U.S. version of "The X Factor," but creator Simon Cowell said on Thursday that producers were still juggling dozens of names for the TV talent show.

Latin singer Gloria Estefan may also have put herself in the running by turning up unexpectedly at open auditions in Miami and spending hours mentoring some of the thousands of hopefuls looking for a spot on the show, Cowell said.

So far only the acid-tongued Briton, and record executive Antonio "L.A." Reid have been announced as judges on "The X Factor", which debuts on Fox in the fall with a $5 million prize for the winner and a record contract.