This study was conducted to compare the UPLB students’ awareness, knowledge, attitudes and practices (AKAP) on sustainable fashion. It also described their socio-demographic characteristics, explained their AKAP on sustainable fashion, analyzed the relationship between their AKAP towards sustainable fashion, and compared the AKAP of students who have not yet taken the HUME 112 (Sustainability Science) course (first cohort) and students who finished the HUME 112 course (second cohort) on sustainable fashion; and formulated recommendations on the AKAP of selected UPLB students. This research was conducted using a quantitative research method with 225 selected UPLB students determined through purposive sampling. A self-administered survey questionnaire through Google Forms was used as a research instrument. Data were analyzed using descriptive statistics, Spearman’s correlation, and Mann-Whitney U-test. Results showed that the respondents from the first cohort showed a moderate level of awareness, while the respondents from the second cohort showed a high level of awareness. For the knowledge level, both cohorts (first cohort is 77%, second is 95%) had a high level of knowledge on sustainable fashion. Both cohorts showed favorable attitudes towards sustainable fashion and had a moderate level of practice towards sustainable fashion. Variables such as awareness and knowledge, awareness and practices, and knowledge and practices had a significant relationship with each other for the first cohort, while only awareness and knowledge and awareness and practices for the second cohort. Lastly, results showed a significant difference in the awareness and knowledge level between the two cohorts.