JLS let us hear Hottest Girl in the World a while ago but this is a brand new acoustic performance.
The song is due to be released on Monday 21st October. Click here to find out more!
We think the song is about a girl from a really hot country, like Dubai!
We will be playing this song on Fun Kids as soon as possible but until then, you can hear the classic JLS hits in The Treehouse every weekend from 4pm!
You can listen to Fun Kids on DAB Digital Radio in London and online across the UK!
Who is your favourite boyband? JLS, One Direction, The Wanted or someone else?