Body positivity is, to my mind, a key tenet of feminism and indeed any kind of anti-kyriarchism. The body does not dictate the worth of the person. Any person in any body, whatever its size, shape, needs or configuration, is worthy and no person deserves shame for their body. Our beauty standards are sizeist, ableist, misogynist, cissexist, binarist, ageist, racist, probably other -ists as well and thoroughly broken and everyone's body deserves celebrating for being the shell that holds a person/s, a person/s who is/are always of worth.