Rihanna Diamonds World Tour: 'Stay' Singer Booed in Australia, 80 Minutes Late to Show in Adelaide, Fans Accuse RiRi of Being Drunk on Stage, Lip Syncing [VIDEO]

Rihanna is not having the best time Down Under on her Diamonds World Tour. The "Stay" singer has started late at both the shows she's played in Australia thus far, leading to fans becoming very discontent with RiRi.

According to the Adelaide Advertiser (via Billboard), Rihanna was due on stage at 9 p.m. at a show in Adelaide, Australia, on Thursday, Sept. 26, but didn't appear until 10:20, an entire 80 minutes late. The extreme tardiness led to the massive audience booing Rihanna upon her arrival. The incidence was caught on tape (see below).

Eventually, the boos turned into cheers once fans realized that despite the lateness, Rihanna was actually in the building. "I'm finally here. You know, it takes me forever to get back to Australia every time," Rihanna said before beginning her performance. The acknowledgement of finally arriving seemed to indicate being in the country in general, however, not her most recent lateness.

According to Billboard, the Adelaide date was not the first time Rihanna was late onstage in Australia, despite it being only her second tour stop in the country. She was 40 minutes tardy to her first date in the city of Perth.

Not only was she so late in Perth as well, but fans have accussed the singer of performing drunk onstage at that concert. According to Albawalba.com, Rihanna's fans were furious on Twitter following the Perth show, because she appeared glassy eyed and appeared to be lip-synching.

Despite the troubles, Rihanna will continue on her world tour in Australia and beyond. On Sept. 30 and Oct. 1, she's due to perform in Melbourne, Australia, before moving into Sydney.