When pop superstar P!nk discovered that Bruno Mars had beaten her to the number 1 spot on Billboard's Hot 100 Chart she decided to air her disappointment through Twitter. 

The 'Who Knew' singer wrote jokingly earlier this afternoon (February 3):

"some1 just said if 'F**kin Perfect' goes to #1, it'll b the only time that's evr happened off a greatest hits. Please, Bruno? take ur song back"

"and damn you Bruno Mars! you're lucky I love that song!!!! :)"

Mars' 'Grenade' is celebrating its fourth week at the top of the U.S charts whilst P!nk's 'Fuckin' Perfect' is hot on its heels at 2. Watch Bruno Mars' video for 'Grenade' here: