Kelly Clarkson has revealed the finished version of the new song 'Stronger (What Doesn't Kill You),' a track from her 'Stronger' album, due later this month.

We know how Kelly feels about song leaks, so we're happy to report that she approved this one! Clarkson wrote, "Hey ya'll - I heard that some versions of 'What Doesn't Kill You (Stronger)' started showing up online. My new album 'Stronger' is out in 3 weeks (Oct. 24) and I want you to hear the real thing! Check it out!"

Atop a vibrant beat with synth and electric guitar accents, Clarkson tells off an ex: "You think you got the best of me / Think you had the last laugh / Bet you think that everything good is gone / Think you left me broken down / Think that I'd come running back / Baby you don't know me, cause you're dead wrong."

"What doesn't kill you makes you stronger / Stand a little taller / Doesn't mean I'm lonely when I'm alone," Clarkson sings during the soaring chorus.

With a strong hook and an empowering message, 'What Doesn't Kill You' is vintage Kelly Clarkson. And it's actually a bit 'Stronger' than the album's actual lead single, 'Mr. Know It All.' Let's hope 'What Doesn't Kill You' ends up being single number two!

Listen to Kelly Clarkson, 'Stronger (What Doesn't Kill You)'