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The infamous celebrity judge, Simon Cowell, took the opportunity to diss his fellow The X Factor judge, Nicole Scherzinger, while ridiculing one of the show's contestants.

"That's exactly what I would have seen with Nicole had she been 20 auditioning for the show for the first time. I do," Simon told the aspiring singer as Nicole looked on in shock.

It didn't take the former Pussycat Doll long to break out her claws, responding with, "That's funny cause you can look it up on line, I was on a show called Pop Stars and actually sang Whitney Houston's I Will Always Love You." Then the singer broke out in song, proving how wrong Simon was.

What do you think of Simon's diss? Nicole's voice?

Photo courtesy of Fame Pictures