What goes on in Vegas most certainly will NOT stay in Vegas here!
Watch it go down (below)!!!
We've just fallen in love ALL over again with the seXXXy men of One Direction!
Just look at the pain in Harry Styles' eyes as he belts that angelic voice of his! The musical moment couldn't have been anymore perfect…
…unless we were close enough to glide our fingers through his silky mane! LOLz!
Ch-ch-check out the PERFECT performance (above)!!!!