Louis Walsh says Simon Cowell "should get a new face".

Louis Walsh

Louis Walsh

The 66-year-old former 'X Factor' judge has quipped that the ITV show's boss, 59, should follow in ex-colleague Sharon Osbourne's footsteps by going under the knife.

The music mogul said: "Simon has changed a lot.

"Have you noticed the boat race [his face]? It has changed. He needs a new face.

"You see him on the TV, he needs to get it sorted.

"I know Sharon will help him because she got a new one and it has worked.

"He should ring her because I talk to her all the time and she is looking amazing.

"It did take three faces. This is the third one and it is the best one yet and she is keeping this one, she tells me."

Sharon - who was a judge and mentor on the talent show between 2004 and 2007 - previously admitted she is on "face three and counting".

Louis got the boot from 'The X Factor' earlier this year after a total of 13 years on the show and was replaced by Robbie Williams.

And he insists the current series should've achieved higher ratings because of the presence of the Take That singer on the panel.

Speaking on 'The Ray D'Arcy Show', he added: "Well the ratings weren't great this year. And with Robbie Williams there, who is a big name, and Simon ... it should have not mattered with the other two in between, you know.

"It should have worked as Robbie is a big name and he is a great judge."