The 22-year-old went topless for a stroll around New York on Tuesday to raise awareness of her #FreeTheNipple campaign, and shared the photos on her official Twitter page.
"Legal in NYC but not on @instagram," she captioned one of the snaps, which saw her doing a spot of topless flower shopping. As you do.
In another, Scout can be seen wearing just a floral skirt, shoes and handbag as she wanders down a street in the Big Apple, which she captioned: "What @instagram won't let you see."
The model and actress is unhappy with Instagram's policy of prohibiting the use of any images of female nudity - even in the context of women sharing their pictures relating to breast cancer.
To highlight what she sees as the site's hypocritical rules, Scout re-posted a shot from the infamous venture capitalist Dan Bilzerian's Instagram account, which regularly show him posing provocatively with scantily clad women.
"@instagram pictures of breast cancer survivors have been flagged+deleted but this is super #sick and #hot amiright???' she wrote alongside the image.
Scout's protest is in response to Instagram suspending her account after she posted a photo of a sweatshirt she designed that featured two topless women.
It comes just a few weeks after a woman in Canada had her account shut down after she posted photographs of herself breastfeeding. It was later reinstated, albeit with several of her photos removed.