Pop star Miley Cyrus debuted the video Wednesday for "We Can't Stop," the lead single from her forthcoming fourth album.  The single debuted last week, reaching No. 11 on the Billboard Hot 100 singles chart.  Cyrus's fourth album, meanwhile, will contain production contributions from hip-hop heavyweights such as the Black Eyed Peas' Will.i.am, Dr. Luke and Pharrell.  The set has not been named and a release date has not been announced.  Watch the video for "We Can't Stop" below.