The 16-year-old fan girl that lies dormant in all of us will freak out at this video. It's only our own Niall Horan, Justin Bieber and some chap called Cody Simpson (he's apparently a big deal too) having a bit of sing-song together. (We don't know who the fourth dude is.)

Well actually, Justin is the only one singing, while the other two lads are on their guitars. Niall is doing that rhythmic nod of the head every Irish person has learned to master when someone pulls out a guitar at 3am.

Still though, nice to see the pop stars getting on and what not, especially since all three are linked with Selina Gomez. Clearly no beef there then, unless this is their way of hugging it out.

There is speculation however about that pipe-like thing that's on the table, but we will let you make your own mind up about that...