Pop superstar Britney Spears "lit up" the video set of her new collaboration with will.i.am.

The two stars teamed up for the single 'Scream & Shout', which will be taken from the Black Eyed Peas star's new album '#willpower'.

The highly-anticipated promo for the song was officially screened on Wednesday's (November 28) episode of X Factor USA, and the director Ben Mor has gushed about working with the pop songstress.

He told MTV News: "I was very, very excited. Needless to say, I've always wanted to work with her and so completely looking forward to it, super stoked that I finally get to work with her."

He added: "And she was absolutely super professional. [She] wasted no time, showed up before anybody else. [She] was spot on time, not a minute late. Her hair and makeup team, her glam team was amazing to work with. She did her thing. It was awesome to watch. She just lights up. The music kicks in, and it was just awesome. I can't say enough good things about her and her team. They were just awesome."

Mors also explained the relationship between will.i.am and Spears - who have previously worked together on the 2011 Femme Fatale track 'Big Fat Bass.'

He said: "They definitely have like a brother/sister kind of camaraderie. You can tell they're comfortable around each other. ... Completely friendly, just completely natural. They were just sweet, effortless."