Justin Bieber got into a little altercation with party animal David Arquette at his 21st birthday bash recently. The party was raging past 7 AM, according to Bouncer Chronicles. The first half of the party was being held at Omnia Night Club where we hear Bieber paid a whopping $500,000 to the Hakkasan Group to host his special celebration.

The after-party was at Bieber's rooftop villa at Nobu Hotel at Caesars Palace. Our spies noticed Arquette was pretty messed up by the time the after-party started and was openly taking bad about the birthday boy. When Bieber heard him talking shit, him and his friend threw David out of the party. Somehow Arquette got back into the suite and rushed at Bieber to take him down before being thrown out for good.