Rihanna did a Miley Cyrus by giving a crotch-grabbing performance when she kicked off the Australian leg of "Diamonds World Tour" in Perth Arena Tuesday night. The singer kept rubbing her crotch during the entire performance and her singing appeared slurred and "boring" to many.

The "Umbrella" hit maker appeared disinterested when she first started and even slurred while singing to her songs. Many Twitter fans believed that Rihanna was apparently drunk for her performance.

"Was @Rihanna drunk for her #DiamondsWorldTour Australian debut in #Perth? #rihanna," said WA today on Twitter.

"@dmcclung hahahah! Well she was too busy sinking wet p-ssy shots," another user Blurred Sandry said on Twitter referring to her crotch grabbing act.

Rihanna Live at Perth Arena September 24, 2013

Source: Youtube.com/scopecube

Rihanna who was dressed in a black two piece and her trademark mullet kept the audience waiting for more than forty minutes. The singer wore high-waisted black leather shorts which barely covered her legs and teamed it up with a satin bra and a sheer long-sleeved net jacket. Her knee high metallic boots gave her a look of a rock star. She did not use any wigs and kept her hair as it is in mullet style and her lips covered in bright red lipstick.

The audience wanted the singer to perform on her famous number but she instead chose to open with "Talk That Talk." The show became rather mundane when she was performing her reggae numbers but picked up pace and involved her audience as she sung her hit numbers "Umbrella," "All of the Lights," "Rockstar," "Take A Bow," "Hate That I Love You," "We Found Love," "S&M," "Only Girl in the World" and "Don't Stop The Music" which kicked off positive reviews from Twitterati.

"#PERTH we bout to get craaaazzyyy #DiamondsWorldTour," said one fan Rihannafan on Twitter

"OMG RIHANNA IS IN AUSTRALIA RIGHT NOW IM GONNA DIE! SEEING HER NEXT WEEK!," said another user.

However the singer has been always laced with controversy ever since she kicked off her world tour. Rihanna's world tour has thus far been peppered with controversy. On Sunday, she left thousands of her fans disappointed at the Singapore Grand Prix concert, where she again appeared "drunk" and was allegedly lip synching to the tracks.

Twitter Australia Diamonds