05/02/2011 AT 04:25 PM EDT
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."
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.