The 'Stay Awake' rapper says he recently bumped into the country star last night in Australia.
One Direction Jingle Bell Ball 2012
The 'Taking Over Me' stars tell Capital the country star revealed she's a big fan and said they could be huge in America.
The likes of US superstar Bruno Mars, nation's sweetheart Cheryl Cole and boy band sensation One Direction all performed.
The 'Live While We're Young' singers got the whole O2 Arena crowd on their feet for their explosive set.
The 'We Are Never Ever' singer joins boyfriend Harry Styles at the event in London.
The 'Live While We're Young' singers had the London O2 crowds screaming. See the pictures of Harry, Liam, Niall, Louis and Zayn at the Jingle Bell Ball 2012.
Join Capital as we countdown to this year's Jingle Bell Ball by taking a look at how all the biggest names in hit music are preparing for the event at London's O2 Arena.
To get you all ready for this years Capital FM Jingle Bell Ball, check out some of the facts and figures that define this year's incredible line-up of artists.