The British band and the Bajan beauty previously teamed up on the track 'Princess of China', which featured on Coldplay's 2011 album 'Mylo Xyloto'.

Speaking to ET Canada, Martin rated Rihanna as the third best lady in the world - after wife Gwyneth Paltrow, who took up No.1 and No.2, of course.

However, Rihanna's got competition from Beyoncé and Cameron Diaz, who take joint third. Martin said:

"I think she's the third most attractive lady in the world. My first and second is the same person [Gwyneth], she gets two. Rihanna's a distant third. Cameron Diaz is up there as well, she's third. There's a few thirds, Beyoncé is third as well? Naming all these great ladies. This is a silly conversation! This is going to be the headline, I've just screwed up the whole interview."