Justin Bieber is apparently being sued by Casey Dienel over his chart topping single Sorry. Dienal is an indie artist who claims that he stole her vocal loop on ?Sorry?. Dienel claims that Bieber did not contact her the release of ?Sorry?. She says ?unique characteristics of the female vocal riff? on her 2014 hit ?Ring The Bell? are similar to Sorry. She claims they were used without her permission.