OMNIA Nightclub at Caesars Palace opened its doors last night for the first time for an evening that would go down in nightlife history, with iconic resident DJ Calvin Harris. As Harris christened the decks in the main room, thousands of patrons flocked to the premiere hot spot to witness the next generation of nightclub entertainment. Opening weekend continued as OMNIA pulled out all the stops. On Saturday, March 14, the nightlife destination welcomed in global music phenomenon Justin Bieber as he celebrated his 21st birthday in true Vegas fashion, all while headlining DJ Martin Garrix manned the turntables.