So during that first scene or two, I imagine they used discrete pasties or something along those lines. During the rest of film, they went topless. Scared of getting arrested on the streets of NYC, most of the topless scenes were done in one shoot. The celebrities were literally running with the policemen on their heels. How sad that in a city as progressive as NYC, where women are lawfully permitted to be topless, they were always coping with the fact that they could get arrested!
As a topfree activist, I do have problems with the picture and how topless equality was depicted. I found that the message of women's equality was somewhat muddled and just skimmed the surface. While there's a short section during Liv's interview w 
here  she touches on the feminist issues related to breasts and female bodies, the remaining part of the film is basically about the problem of censorship and their problems in financing / found a grassroots movement.
The censorship theme attempts to drive home the point that America censors benign nudity and glorifies violence. This point is further made apparent in the beginning of the film when Spencer Tunick is featured talking about the way the New York Times had a problem using among his photographs because one female breast was observable. In  
https://videonudist.com/videos/thanks-for-your-last-comments-so-2138.html  contained some TV news footage from Janet Jackson's nip slip fiasco during the Superbowl halftime show.
So what's this move and movie primarily about? Ending censorship? Or helping  
https://nudistclip.com/videos/an-easy-babe-and-the-2259.html  recover control of the bodies through topless equality?
In the picture, the girls talk about Femen but make no mention of the women who came before them. They never bring up the fact the Rochester 7 won their landmark case called People v Santorelli in 1992 so making topfreedom a right for ALL women in NYS. Nor do they recognize any of those that got detained, filed suits and set their standing and wellbeing on the line for women's equality.
During the Q&A session after the screening, Esco appeared to be distancing herself from her own cause. She insisted that Free the Nipple was meant to start a dialogue about all issues associated with gender equality. When asked by Scout Willis (who was in the audience) what the next step was and what she felt now that the movie was out, Esco appeared uneasy and briefly mentioned identical pay that is it. Esco made no reference or deep discussion about topfree rights, women's rights, endorsement or anything else (other than equivalent pay).
She appeared disconnected or tired of answering the question, Why nipples, why toplessness? It felt like she was stating what she thought was a much better means to justify her own movie. I feel that girls taking back their bodies through topfreedom is worthy of discussion and attention all on its own but sadly, I don't believe that Esco concurs (at least that was my opinion).
Lina Esco at the NYC Movie Premier of Free The NippleThe Socioeconomic Context of Naturism
Guest Website by: African American Naturist
Among the first things that global mercantile forces did to create cloth markets among the indigenous peoples of the regions and islands of the Arctic, Europe, Asia, Africa, the Americas, Australia, and Oceania Polynesian/Melanesian societies) and was to promote and enforce body shame upon subject inhabitants, demanding the purchase of textile clothes.
It was done through spiritual associations (doctrines, movements, jihad, and missionaries), together with military force. Some of the goals of cloth enforcement were to establish, increase, and solidify hierarchical and social sections among area people according to gender, age, wealth, ethnicity, appearance, standing, and many other criteria (i.e. who wears the pants, skirts, uniforms, boots, bras, and badges) among subject residents to keep them more alienated from one another, less cooperative with each other, and more easily controlled.
Kate Middleton meets topfree Marau girls, not long after being shamed for her own topless pictures in the press. The women's breasts were censored in many news publications.
                    
                                    
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