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The X Factor

Nicole Scherzinger to Host The X Factor: Source

05/02/2011 at 04:25 PM EDT

Simon Cowell has not yet revealed the identities of the all the judges on The X Factor, but a source tells PEOPLE that Nicole Scherzinger will be the show's host.

Formerly of girl group the Pussycat Dolls, the singer-actress, 32, appeared on the U.K. version of The X Factor as a guest judge in July. At the time, fellow judge Louis Walsh praised Scherzinger's stint on the show saying, "This girl has the X Factor in every way. She was incredibly impressive and ticked every box."

Added the show's U.K. host, Dermot O'Leary, "She was hilarious."

When discussing Scherzinger during a chat with Ryan Seacrest on his KIIS morning show in March, Cowell said, "I absolutely adore her. She's gorgeous and ruthlessly ambitious."

RELATED: Simon Cowell Wants Paula Abdul to Be a Judge on The X Factor

It's still undecided whether Scherzinger – who will release her solo album Killer Love later this year – will have a co-host, but Cowell has said he thinks the show could benefit from two hosts.

In March, Cowell named Antonio "L.A." Reid as a judge on X Factor. Cowell himself will also be a judge. And when it comes to filling the other two judges' seats, Cowell told PEOPLE in March that Paula Abdul and Cheryl Cole are in the running.

In the meantime, thousands of hopefuls continue to come out for X Factor auditions across the country. Next, the show heads to Dallas in search of talented singers.