The Daily Mail reports, “She is arguably the most famous singer in the  world right now.

And Miley Cyrus seems determined to keep it  that way.

In new pictures and a video posted to  Instagram, Miley is seen attacking fellow pop star Avril Lavigne after the pair  argue about which of them is ‘the most famous person in Canada’.

In the video, posted by Miley, 20, on  Tuesday, she wears a Marijuana onesie.

She is seen reading a magazine with a paper  stuck to the front showing Avril, 29, with the words ‘the most famous beautiful  and popular in Canada’ scrawled in black pen, as well as ‘I heart’ and a picture  of a marijuana leaf.

Miley, who is currently in Canada for her  Bangerz world tour, looks indignant that she isn’t given the ‘most famous’  title.

‘I mean I’m in f**king Canada,’ she says.  

Avril then walks in and strides up to the  star.

‘Oh hey Miley, I’m actually the most famous  person in Canada,’ says the Ontario native.

Miley then jumps up and protests, stating,  ‘I’m the most famous person in Canada, you dumb f**king b**ch’.

The pair then start play fighting. ‘F**k  you,’ shouts Miley.

Avril famously came out in support of Miley’s  controversial VMA performance last year, stating:

‘It’s actually really funny cause my managers  also manage her. She is doing her thing right now and she is kicking a**, so  good for her.'”

Source & images: Daily Mail