She is set to grace the stage on Thursday evening in Melbourne, treating her fans to a mysterious stand-up comedy act before performing in her Rebel Hearts tour over the weekend.

But is Queen of Pop Madonna going to be joined by Pop Princess Kylie Minogue?

Madge's manager Guy Oseary sent fans into a frenzy on Wednesday evening when he posted a picture of himself with Kylie during a meeting in the Australian city.

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Mysterious meet-up: Kylie Minogue met up with Madonna's manager Guy Oseary on Wednesday leading to speculation that the pop princess may be joining Madge on stage in Melbourne this week

The pair were seen cuddling up at a cafe and snapped a smiley selfie together.

Fans immediately began speculating whether the Spinning Around star would be joining Madge on stage in Melbourne or if the pair are perhaps planning a collaboration.

One fan wrote in a comment under Guy's post: 'Will Kylie Minogue sing on stage with Madonna? Will the dream of gay millions really come true? Madonna's manager meeting with Kylie? It might happen in Melbourne! Stay tuned!!!'

While another penned: 'Madonna and Kylie are old school, to see them together has been a long wait... If you're planing to put Kylie on stage with Madonna it must be epic. Not just an unapologetic act like the others.'

The greatest pairing of all time? Fans have been sent into a frenzy at the thought of an appearance or collaboration between the two pop stars

Rehearsals: Madonna was seen entering the Forum Theatre in Melbourne on Wednesday night for rehearsals

Meanwhile, one simply left 'wish i could be in Australia right now' under the snap.

Madonna may also be planning on 'spanking' the pop princess during her Rebel Hearts show over the weekend.

Ariana Grande was spanked at the end of January by the superstar when she closed the US leg of her tour.

She also smacked Katy Perry on the bottom when the Teenage Dream songstress hopped on stage in Los Angeles, and Perry's ex Diplo, when he appeared on the first night of the tour in Montreal back in September last year.

Kylie has been Down Under for the last week and attended a huge event at the Sydney Opera House on Sunday evening for Qatar airways.

The newly engaged star has since been travelling around the country, stopping off in Byron Bay before jetting down to her hometown of Melbourne.

Madonna will treat her Aussie fans to her highly-anticipated comedy act at the famous Forum Theatre on Thursday evening, and was seen arriving at the venue on Wednesday night.

'A small gift for Australia for being so patient': Madonna has decided to treat her fans in Melbourne to a mysterious stand-up comedy act, called Tears Of A Clown

Putting her recent family woes to one side, she recently started rehearsals for the one-off show, called Tears Of A Clown.

Taking to her social media sites this week, Madonna showed off her playful side as she slipped into a pink clown costume while teasing fans about the upcoming project.

She captioned the picture: ‘All the World loves a clown.:.......a small gift for Australia for being so patient! ❤️#rebelheartour.’

Just moments later, Madonna shared a short video with behind-the-scenes footage as she made preparations for the circus-style entertainment.

See Madonna updates as she prepares for Melbourne comedy gig

Feeling angry? This week the star shared a short video with behind-the-scenes footage of the comedy show as she made preparations for the circus-style entertainment

Rage: The American star could be seen riding a small tricycle on stage, before throwing it across the room

Playful nature: She happily goofed around on stage ahead of Thursday's performance

The American star could be seen riding a small tricycle on stage, before throwing it across the room and stomping around the platform in an oversized pair of red and blue shoes.

Her recent antics comes days after she broke down on stage during the New Zealand leg of her Rebel Heart tour, emotionally professing love for her son to the crowd.

Madonna has been embroiled in a bitter dispute with her ex-husband Guy Ritchie over the future of their 15-year-old son Rocco.

There she goes: Madonna could also be seen practicing her tap-dancing skills

'Insane clown Posse': She was seen stomping around the platform in an oversized pair of red and blue shoes

A star of many talents: The 57-year-old has started rehearsals for the one-off show, called Tears Of A Clown, which will be held at the city’s intimate Forum on Thursday night

The mother-of-four burst into tears on the Auckland stage as she told fans: 'There is no love stronger than a mother for her son. If I talk about him too much I might cry.'

She then went on to dedicate her song La Vie en Rose to him and said: 'I hope he hears this somewhere and knows how much I miss him.'

It has since been reported that Madonna and her former husband are close to reaching a private agreement over Rocco' future - allowing him to live in London but to have plenty of access to his mother.

The pop star is due to perform in Melbourne this weekend, before moving to Brisbane and Sydney next week where the Rebel Heart world tour will end.

Family woes: Touring aside, the singer has been embroiled in a bitter dispute with her ex-husband Guy Ritchie over the future of their 15-year-old son Rocco

'Tears of a clown': And as her custody drama made headlines, Madonna took to Instagram last week to post a video of herself dressed as a circus clown – evidently in preparation for this one-off show