Slow Hands Niall Horan
P!nk has begged Bruno Mars to stop selling his single so she can get to Number One in the US.
P!nk is currently at Number Two in the Billboard charts with 'F**kin' Perfect', one place behind Bruno's 'Grenade'.
Writing on her Twitter page she said: 'Damn you, Bruno Mars! you're lucky I love that song!!!:)'
She later posted: 'Some1 just said if 'F**kin Perfect' goes to #1, it'll b the only time that's ever happened off a greatest hits. Please, Bruno? take ur song back.'