Varun Dhawan and Sidharth Malhotra fall out?

Varun Dhawan and Sidharth Malhotra

This might as well be a scene straight out of Karan Johar's film, 'Student of the Year'. At the filmmaker's party, his star students Varun Dhawan and Sidharth Malhotra apparently had a falling out. Says a source, "Varun and Siddharth were present at Karan Johar's birthday bash and there was a heated debate between the two of them."

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Varun Dhawan and Sidharth Malhotra

The source adds that it all started with a joke, but soon things got out of hand and it turned into a heated argument. "Sidharth took offence to Varun's comment and the two had a fight. Some people at the party then had to interfere and sort things out. Soon after, Varun left the party," says the source.

However, Sidharth denied the story. "Nothing really happened between Varun and me. I don't know where all these rumours come from," he said.

Varun remained unavailable for comment.