'When girls night got out of hand': Playboy model Simone Holtznagel poses TOPLESS in very raunchy Instagram post

She's the former reality TV star forging a successful career as a lingerie model.

But despite her busy work schedule, Simone Holtznagel still enjoys an occasional girls' night out.

The 23-year-old spent the evening with a female friend on Wednesday, which resulted in a very rude photo shoot. 

'When girls night got out of hand': Playboy model Simone Holtznagel poses TOPLESS in revealing post

The Playboy model posed topless and winked for the camera wearing just reading glasses in a post shared to Instagram.

In the risqué photo, Simone sits with her back to a white fireplace, using her hands to cover her modesty.

She pouts for the camera and winks behind a set of black-rimmed spectacles, while her blonde hair is swept in a high ponytail.

Successful: Since appearing on Australia's Next Top Model in 2011, Simone has found success as a curvy lingerie model

In the photo's caption, Simone laments her lack of tan and explains how the picture came to be taken.

'When girls night got out of hand and I was so pale I almost blended into the white,' she wrote.

'This picture does not do my pale-ness justice @hannah_glasby lol.'

Big names: Simone posed topless for Playboy magazine in 2015 and has modelled for Guess

The model also added the hashtag #freethenipple, a social movement against the censorship of breasts on Instagram.

Since being named the second runner-up of Australia's Next Top Model in 2011, Simone has found success at home and overseas.

She posed topless for Playboy magazine in 2015 and has flaunted her curves as a Guess girl in several adverts.

But not all of her modelling jobs have been without controversy, with Simone hitting back after complaints her TV advert for Bras-N-Things last year was too raunchy.

Complaints: But not all of her modelling jobs have been without controversy, with Simone hitting back after complaints her TV advert for Bras-N-Things last year was too raunchy

She later addressed the criticism on Instagram, writing: 'How dare you sexualise my body.'

'How dare - after all society's requests - you take a confident and carefree depiction of a normal, healthy womanly body, promoting women's products to women, and deem it offensive,' Simone continued. 

'Do not impress your insecurities on me, whether physical or sexual.

'By saying my body, just comfortably being my body, is somehow "wrong" or "dirty" you are insulting and potentially damaging any woman who may identify with me.'

'Do not impress your insecurities on me': Simone later addressed the criticism on Instagram

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