Holly Madison shares gross reason why Hugh Hefner didn't want any Playboy models wearing red lipstick

Holly Madison has shared a pretty harrowing reason why Hugh Hefner didn't want any Playboy models wearing red lipstick.

Madison, an American television personality, is best known as a former girlfriend of the late Hefner after dating the Playboy founder for seven years until they parted ways in 2008.

The Girls Next Door star, 43, has since opened up on some of her experiences at the infamous Playboy mansion after she first moved in back in 2001.

Speaking on a recent episode of the Ahead of the Curve with Coco Mocoe podcast, Madison revealed Hefner's strict rules when it came to the women living in the mansion.

Talking about Hef's 'control tactic' surrounding his aversion to a bit of rouge lippy, Madison explained: "I think it was a control tactic, but also, when I was brand new, I wore red lipstick out a couple of times, and he didn't say anything about it, because when you were the new girl in the group, you were always treated well."

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Madison went on to share a particular phrase she had previously heard: "Somebody said, like, the higher up you are in a cult the worse you're treated because they want the new people to bond and feel into it."

But, after half a year of Madison living at the Playboy residence - everything began to change.

"It wasn't a big deal until, like, six months into it, when I was living in his bedroom and I was the main girlfriend," she continued. "That he felt like he had the leeway to yell at me over it."

Madison then opened up on her theories to why Hefner was so controlling over his girlfriends' makeup choice.

"I think he didn't love it," she said. "Because when he invented the concept of a playmate in the '50s, he wanted the women to look very young and fresh-faced because he felt like the look in the ‘50s at the time was very - he described it as 'somebody's older sister'."

Explaining a little more behind Hef's reasoning, Madison went on: "It was more sophisticated, fashion model, red lipstick.

"It was a lot of fabric and big skirts and everything, and he hated that."

Instead, Madison claimed: "He wanted skimpy and fresh-faced and very young looking."

And if you thought that was creepy - wait for this.

For Hef, Madison revealed, bold makeup was reserved for 'older mature women' which was certainly not his type because 'it wasn't, like, the barely legal thing anymore'.