Rihanna Drunk on Stage 2013? RiRi Accused of Lip-Synching, Being Drunk After Arriving Late to 'Diamonds World Tour' Show in Australia

There is more controversy surrounding Rihanna and one of her on-stage performances. This latest speculation comes from Australia where RiRi reportedly showed up nearly an hour-and-a-half late after being accused by a reviewer of drinking backstage. This latest controversy comes just a few shows into the latest leg of her 2013 Diamonds World Tour. What makes matters even worse is that the show in question is one that occurred Thursday night in Adelaide just a couple nights after allegedly showing up 40 minutes late to a show in Perth, Australia according to Radar Online.

A reviewer for NovaFM Australia wrote that Rihanna showed up to the concert on Thursday night about 80 minutes late and looked to have enjoyed a few "sherberts," which is apparently is the Australian slang for beers. "When she finally arrived, it was obvious Rihanna had been enjoying a few sherbets backstage," the NovaFM review wrote.

The review went on to allege that Rihanna also was lip synching her way through parts of the show. "If her glassy eyes didn't arouse suspicions, then her constant crotch grabbing and lack of actual singing would have given the game away," the review went on to say. "Not that Rihanna didn't give her vocal chords a good workout, but throughout the concert, particularly during the first half, she relied on a backing track and the harmonious support of her backup singers, while she concentrated on her dance moves."

By the looks of Twitter there seemed to be a number of upset fans as well.