She's never been afraid to gloss over some of life's most unsavoury moments.

But Lena Dunham bemused even her most loyal of fans when she shared a snap of herself sitting on the toilet.

Taking to Instagram on Monday, the 30-year-old Girls star left none of her day's activities undocumented as she posed on the loo with her dress hitched up around her waist.

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Down the pan: Taking to Instagram on Monday, Lena Dunham, 30, left none of her day's activities undocumented as she posed on the loo with her dress hitched up around her waist

Looking slightly worse for wear in the snap, she pulled a sultry expression as she sat with her tights and underwear pulled down by her thighs.

Proving that even the toilet can be the perfect posing snap, she reclined and pushed her hands between her legs as she pouted down the lens.

Admitting that her boyfriend was the photographer, she captioned the image: 'Model citizen photo by @jackantonoff who may regret having essentially married me (it would be very hard to detangle our assets). '

'Feminist hero': Later in the evening, Lena shared another snap from her nights festivities. Posing with a pillow, she wrote: 'This Fab X Broad City collab is my safe space'

Later in the evening, Lena took to the photo sharing website to share another snap from her nights festivities.

Posing with a 'feminist hero' pillow, she wrote: 'This Fab X Broad City collab is my safe space.'

Clad in her lurex T-shirt dress, the photo was cropped to reveal just her shoulders following her earlier no holds barred snap.

Candid camera: Lena's boyfriend Jack Antonoff was her photographer for the evening

Lena's snaps came after she posted a snap of herself wearing a silky grey gown that clung to her physique on Sunday - an image that prompted one well-meaning follower to pose the question, 'Are you expecting?'

Lena offered up a hilarious and eye-opening response as she replied directly to her fan, who had also complimented the actress on how amazing she looked.

'thank you!', Lena first wrote in response to the admiration. 'I'm not expecting but I did enjoy a large box of gluten free crackers prior to this image,' she hilariously continued.

'It's funny,' she added. 'Folks have told me I looked pregnant/asked since I was 15 - I choose to embrace it as another curve like a** or boobs or hip.'