An Australia's Next Top Model contestant hurled this insult at judge Alex Perry. Bad idea.

What do you do when one of the country’s leading fashion designers, and Australia’s Next Top Model judge, Alex Perry, criticises your latest modelling photo?

Poke fun at them, of course.

Yes, we’re not serious. That’s one thing you should never, ever do.

Unfortunately, 19-year-old contestant Kassidy Ure didn’t heed this sound advice. She instead took aim at Alex Perry’s lips after he implied her photo looked cheap when he labelled it “catalogue”.

"Your face could be stronger," Perry said of the photo, which was snapped as FIRE was blasted behind the contestants. (Because #FASHUN.)

In a piece to camera, Kassidy hit back at Perry for his feedback, arguing that "at least my lips are real".

Ouch.

Perry gave Kassidy a score of 6.5 out of 10 for her picture, while his fellow judges Megan Gale and Jennifer Hawkins scored her an 8.5 and an 8 respectively, keeping her in the running to take out the competition.

Last night's episode also saw one contestant, Daisy, suffer a panic attack after being given a low score during an 'extreme photo challenge'.

"Medic! I feel like I'm gonna... medic!" she yelled, as she began hyperventilating.

Despite her anxiety, Daisy chose to continue on in the competition.

"I was ready to throw in the towel...but I just decided, 'What if I go home and wonder if I stayed here and tried?'"

See the results of the Top Model makeovers.