The entire Melbourne leg of The Kid Laroi’s first world tour has been postponed with the Australian rap superstar cancelling his second show at Rod Laver Arena due to illness.

The Grammy-nominated rapper, best known for hit Stay (featuring Justin Bieber), cancelled his Saturday show under doctor’s orders.

His much-anticipated End Of The World Tour came to an abrupt halt on Friday, with Laroi cancelling his show 40 minutes after it was due to start, leaving thousands of disappointed and angry fans standing in front of an empty stage.

In an Instagram post on Friday night, Laroi said he was “struggling to stand and go to the bathroom” after falling ill.

“I wanted to perform very badly, so we called the doctors and had them bring an IV drip and some extra stuff to try and help,” he wrote on Instagram.

“As the night went on, it got worse ... I was getting super light-headed and my body felt super heavy. I promise you with all my heart that I gave everything in me to try and get up on that stage tonight.

“This is my first ever tour and I absolutely hate that I’ve had to do this, especially at the last minute as it’s not fair on you guys, but at the end of the day I have to put my health first and I would be lying to you if I told you I was OK to come up and perform for you.”

In a second statement on Saturday, 18-year-old Laroi said he had woken up feeling worse.