Kelly Clarkson was busy playing the last concerts of the Asian leg of the All I Ever Wanted World Tour - however the pop star decided to take some time off and make an appearence.

On Superstar K - the American Idol of South Korea. Kelly taped the show in May and her episode finally aired this Friday.

You can see in the video above that, at first, Ms Clarkson pretends she's auditioning for Superstar K - please look at the suprise faces of the panelists.

At 22-sec mark! LOL Who could actually believe that the one and only Kelly Clarkson would be there to audition? Did those guys now knew who she was? Come on!

The "Since U Been Gone" singer then reveals she's there to guest judge. Anyway, after this hilarious moment, she took her seat and the real auditions began.

She did really good! Clarkson was an excellent judge, being straight-foward with the awful singers and giving constructive critiscm to the ones who had potential.

In music related news, Kelly Clarkson continues recording in the studio what will be her fifth album. She has confirmed to be working with producer Toby Gad (The Veronicas, Alicia Keys) and with Claude Kelly (writer of "My Life Would Suck Without You"). Word has it this project is well advanced, and that the first single could be released in October with the album coming out before the end of the year.