Katy Perry has hinted that her hit single 'Roar' was written about her boyfriend John Mayer.

The song was released recently to much acclaim, with the tune hitting No.1 in both the US and UK.

Speaking to BBC Radio 1, the pop songstress revealed that 'Roar' was written about going on a break with a partner - with many believing the person in question is current boyfriend John Mayer. She said:

"'Roar' is a song I wrote as I was a little bit upset. I found myself having a break with my boyfriend, who I loved very much and it really hurt my heart. I said to myself, 'I need to see what is going on with me and make sure I'm all good'."

Perry added: "When you break up with someone it's easy to say they are crazy and think it's all them, but, honestly, maybe there is 50 per cent responsibility on your behalf. It was just time for me to be honest with myself."

'Roar' meanwhile will feature on the singer's forthcoming new album 'Prism', which will hit shelves on October 22. Check out the record's recently released artwork here.