'Aeroplanes' singers still haven't met!

The singers of the number one song out there at the moment 'Aeroplane's, B.O.B and Paramore lead singer Hayley Williams have apprently never met!

The pair collaborated on the track, which is now number 1 across the world, but if you notice in the video they are never togeth and they recorded their vocals separately too.

B.o.B - real name Bobby Ray Simmons - told a radio station that he had "always wanted" to work with the Paramore frontwoman.

"I've still never met her yet,  which is ironic and funny at the same time because this is, like, one of the most popular songs, but we've still never met."

How crazy is that???