...ORLANDO BLOOM was caught on video right after he punched JUSTIN BIEBER in Ibiza last night.  If you listen closely to the beginning, you can hear the girl Justin say to Orlando, "what's up, bitch?" before he walks out of the club.  When he left everyone clapped. *giggle*  If you didn't know about this light-weight beef, they both nailed each other's girl a while back. (MIRANDA KERR and SELENA GOMEZ.)