Florence Pugh has written a lengthy Instagram post calling out online commentators who critiqued her body after she wore a sheer gown that revealed her nipples.

The Black Widow star turned heads in the dazzling hot pink tulle gown, which featured a sheer bodice and skirt, while attending the Valentino Haute Couture runway show in Rome last week.

Instagram policy currently prohibits images of women's nipples, but not men's, and has been consistently protested by users who urge the site - and society at large - to "free the nipple".

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Pugh addressed this in her first outfit post, captioning the collection, "Technically they're covered?" Posted three days ago, the post is still on the star's account, suggesting that it has slid past the ban. However, this did not stop social media users from targeting Pugh with negative critiques of her body.

"I knew when I wore that incredible Valentino dress that there was no way there wouldn't be a commentary on it", Pugh wrote on Instagram. "Whether it be negative or positive, we all knew what we were doing. I was excited to wear it, not a wink of me was nervous. I wasn’t before, during or even now after."

She continues, however, that "what’s been interesting to watch and witness is just how easy it is for men to totally destroy a woman’s body, publicly, proudly, for everyone to see". She adds that the comments she's gotten have been from men who keep their "job titles and work emails in [their] bio".

She said that she was struck by "how vulgar" some of the comments were. "Thankfully, I’ve come to terms with the intricacies of my body that make me, me. I’m happy with all of the 'flaws’ that I couldn’t bear to look at when I was 14."

Pugh goes into detail about the content of some of the messages, writing, "So many of you wanted to aggressively let me know how disappointed you were by my ‘tiny t*ts’, or how I should be embarrassed by being so ‘flat chested’".

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"I’ve lived in my body for a long time. I’m fully aware of my breast size and am not scared of it."

She goes on to write that she grew up in a household "with very strong, powerful, curvy women", adding, "We were raised to find power in the creases of our body. To be loud about being comfortable".

"I wore that dress because I know. If being loudly abusive towards women publicly in 2022 is so easy for you, then the answer is that it is you who doesn’t know. Grow up. Respect people. Respect bodies. Respect all women. Respect humans. Life will get a whole lot easier, I promise.

"And all because of two cute little nipples…"

The post, which has received over two million likes on Instagram, prompted messages of support from Pugh's fellow stars and fans alike. Valentino Creative Director Pierpaolo Piccioli wrote, "Respect", while Nicola Coughlan wrote, "Adore you".