The pop singer has been labelled as “disgusting” by the man who co-starred in her Teenage Dream video back in 2010.
Male model Josh Kloss alleged that Katy Perry pulled his trousers down at a party and exposed his penis in front of a group of people.
The 38-year-old claimed that the songstress was rude to him on the filming set, and invited him to a strip club afterwards – which he said he declined.
Later, in 2014, they ran into each other at a mutual friend’s party, where he alleges she reached into his trousers, pulling them down and flashing his privates.
The alleged incident was said to have taken place seven months after the 34-year-old Roar singer split from ex-hubby Russell Brand, according to The Mirror.
In a statement shared over Instagram, Josh said: “When I saw her, we hugged and she was still my crush.
“But as I turned to introduce my friend, she pulled my Adidas sweats and underwear out as far as she could to show a couple of her guy friends, and the crowd around us, my penis.
“Can you imagine how pathetic and embarrassed I felt?”
He went on: “I just say this now because our culture is set on proving men of power are perverse. But females with power are just as disgusting.
“So, happy anniversary to one of the most confusing, assaulting, and belittling jobs I’ve ever done.”
The bash was hosted by Katy’s former stylist, Johnny Wujek, 40, who insisted that Josh was making the whole story up.
In a comment, he responded: “I’m not about to let you make accusations against my friend like this.
“This is such bulls***. Katy would never do something like that. We all know about your ongoing obsession with her since the day of filming that video.”
Josh then blasted the fans who were defending Katy, claiming that he’s had far better experiences working with megastars like Kim Kardashian and Kris Jenner in the past.
The model then described the “fear” that burdened him after the incident, which he claims made him feel as though he had been “treated like a prostitute”.
He added: “The fear sticks with you when you are censored to protect someone else’s image.
“But in return treated like a prostitute and exposed in front of a group of her friends and other random people.”
Daily Star Online has approached Katy Perry’s representatives for comment.