There’s a whole new side of Simon Cowell that’s being revealed on season 2 of “The X Factor.” Now that Demi Lovato and Britney Spears have joined the judging panel, he’s become the ultimate prankster, and teases them nonstop.

While B96′s Showbiz Shelly was on the red carpet for the premiere, she witnessed one of Simon’s childish pranks take place, and this time the victim was Demi Lovato.

After they all made hand imprints for the Grauman’s Chinese Theatre, he threw a towel on top of Demi’s perfectly styled hair. Big no no!

All the photos from the premiere party show that this season’s judges enjoy each others’ company and have a lot of fun. We can all expect to see a lot more of this on the show.

VIEW PHOTOS FROM “THE X FACTOR” SEASON 2 PREMIERE