A new documentary about Whitney Houston premiered at the Cannes Film Festival on Wednesday, and it contained shocking allegations about Houston’s childhood. Whitney floats the claim that the late icon was sexually abused by her cousin Dee Dee Warwick (the sister of singer Dionne Warwick). Dee Dee died in 2008, four years before Houston. Houston’s half-brother Gary Garland claimed that he had been sexually abused by Dee Dee and believes Houston was also a victim. Whitney hits theaters July 6th.