"I'm not saying you have to keep your clothes on but why is sexual display part of the job? I might as well ask that question to a barmaid who says she doesn't get any tips if she doesn't show cleavage."
The outspoken author also criticised female athletes for revealing too much of their bodies while performing.
She added: "Why do women athletes have to be naked? I watched bloody figure-skating and the woman is virtually naked. She has got a few wisps of cloth and the man is in evening dress.
"You think nakedness is usually a sign of submission, it's a sign of inequality," The Sun reports.
Actresses at the Golden Globes, who wore black in solidarity with the #MeToo movement, were also criticised by Greer for what she deems hypocrisy.
She said: "Even the women at the Golden Globes demonstration had their t**s hanging out."
The comments were made during the filming of the new BBC show, which is due to air tomorrow.
The author of the 1970s bestselling classic The Female Eunuch also discusses photographs of herself where she is naked and exposing her bottom, although describes those images as "revolutionary" and a "disruptive gesture".
The Australian sparked controversy last month after claiming rape should not be seen as a "spectacularly violent crime", and suggested that offenders should receive more lenient sentences.
Speaking at the Hay festival, Greer hinted that offenders should be given just 200 hours' community service and the letter "r" tattoo'd on their hand, arm or cheek.
She said: "Most rapes don't involve any injury whatsoever. We are told it's one of the most violent crimes in the world -- bull. Most rape is just lazy, just careless, just insensitive," she said, according to British press reports.
"Every time a man rolls over on his exhausted wife and insists on enjoying his conjugal right, he is raping her. It will never end up in a court of law."