On Monday, a rep for Whitney Houston confirmed that the legendary R&B and pop songstress was admitted to an outpatient rehab program to combat her drug abuse. As details of Whitney's current relapse continue to emerge, Prince has been named as one of the celebrity pals who could no longer tolerate her antics.

TMZ reports that Prince's irritation pushed the 'Purple Rain' star to ban Whitney from attending any of his future concerts.

Sources revealed that the trouble arose after the diva attended a few of Prince's recent shows, where she seemed to be "intoxicated" at each event. TMZ went on to say that Whitney insisted on joining Prince on stage, but was denied the chance because his team "didn't want her to embarrass herself." Her last strike was making "excessive ticket demands," which eventually led Prince to ban Houston from any future performances.