The Destiny's Child songstress - who previously completed a stint as a judge on the UK X Factor - seems to be having a blast on the popular TV show this year and got into the swing of the auditions by dancing along to one contestant's vocals.
In a teaser video for the new series, Kelly gets up during an audition to give an impromptu performance for the crowd and even shakes her booty right next to the Simon, who actually appears to be enjoying himself!
So it's no surprise that when the music mogul was then asked afterwards which female judge he considered to be the better dancer out of Kelly and Demi Lovato, he answered "Kelly".
And that wasn't the only time 'When Love Takes Over' singer Kelly got out of her judging seat either.
Also in the sneak peek clip, Kelly is seen joining an older contestant on stage to teach her how to twerk.
Twerking has become a phenomenon in recent months, with everyone from Miley Cyrus to Nicki Minaj and Mollie King from The Saturdays giving it a go for the camera.
Maybe Kelly was putting on a show for Simon after admitting last month that she finds him sexy?
Teaming up with Simon, Kelly and Demi to be on The X Factor USA judging panel this year is Paulina Rubio and the foursome appear to have got up to all sorts of mischief during the various auditions across the States.
We can't wait until this season starts!
Will you be tuning in to watch The X Factor USA this year? Let us know below!
Can you remember all the X Factor UK winners? Here they are:
Copyright: WENN Harsha Gopal