Plus size women have continuously experienced challenges associated to their appearance, which have affected their experience in clothing consumption. Though fast fashion offers their size and is accessible, the industry is a major pollutant, whereas sustainable fashion brands do not carry their size and are more expensive. Hence, analyzing the AKAP of plus size women is essential to alleviating their challenges. The research then conducted using a qualitative research method with 122 respondents determined through purposive sampling. A self-administered survey questionnaire was the research instrument and the data collected was analyzed through descriptive statistics and measures of association. Results showed that the respondents showed a positive awareness of sustainable fashion, a high level of knowledge of sustainable fashion, and positive attitudes and practices toward sustainable fashion. The relationship between their AKAP to one another had favorable results, showing high to moderate relationships. Moreover, age and income were inversely proportional to their AKAP on sustainable fashion. The respondents’ challenges as plus size women are inversely proportional to their awareness of sustainable fashion and directly related to their knowledge, attitudes, and practices on sustainable fashion.