Club sources tell TMZ, Bieber's people called ahead last week, asking to reserve tables at LIV, Story, and Adoré while the Biebs was in town -- but the singer's camp was denied at all 3 locations.
We're told Bieber's people begged and pleaded, promising to spend big money on bottles if the clubs granted Bieber entry, but the clubs didn't budge.
According to sources, there were 2 reasons for refusing Bieber -- first, he's not 21 ... second, the last time Bieber went big at a Miami nightclub he was arrested for DUI.
