The collaboration came about after the two singers performed together on stage at the Z100's Jingle Ball 2011 concert last Friday (December 9).
Clarkson told Just Jared: "It's a song a friend of mine wrote. It's killer and I've been wanting to sing it for a while. It's very like urban, pop/rock, and we both like that.
"It's my normal anthem, shove it in your face [type of song]."
After Clarkson performed with Lovato at Jingle Ball, the American Idol winner praised Lovato on Twitter.
"Girl we have got to sing together again! You have such a powerful and beautiful voice! I love your spirit. Thanks for singing with me tonight," Clarkson wrote.
Clarkson, who is nominated for a Grammy for 'Best Country Duo/Group Performance', recently debuted a studio version of her live cover of 'I'll Be Home For Christmas' to be released digitally.
Listen to Kelly Clarkson's 'I'll Be Home For Christmas' below: