No, that isn't an old pic of the Backstreet Boys with Aaron Carter sandwiched in the middle! LOLz!
It looks like One Direction's Niall Horan met up with the boy band veterans this past weekend in London!!
The 1D member also tweeted that they played One Direction's hit What Makes You Beautiful in the O2 arena during the show and that it was "brilliant!"
Wow! That must've been quite a crazy experience for the young bloke!
Do we sense a NKOTBSB1D mega-tour in the works? Ha!
[Image via Backstreet Boys' Twitter.]
Tags: 1d, backstreet boys, band, boy band, bsb, england, london, niall horan, o2 arena, one direction, what makes you beautiful