The R-Patz inclusion makes this possibly the strangest gaggle of celebrities we've ever seen, and we bloody love it.
The gang of bezzies were filmed leaving the venue and dashing out quickly to an awaiting bus - probably to take them to a pile of money to slide down into a swimming pool of champagne.
Bieber, Selena and K-Pez all quickly sprinted on amidst yells of innane questions from waiting reporters, and shut the door in Robert Pattinson's face.
Yeah. It was awkward. They're probably not used to having a less chirpy member of the gang out with them and forgot he was lurking in the shadows.
Check out the video.
However, this does lead us closer to what we imagine would be The Greatest Thing Of All Time; Kristen Stewart interviewing Justin Bieber. Can you imagine?
Someone set it up, puh-lease.
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