The tal-corset movement, a beauty resistance campaign, swept South Korea’s feminist sce-ne in 2018 and became a phenomenon bringing about unprecedented social changes in South Korea. This article explains sociocultural contexts to South Korea’s tal-corset move-ment through group interviews and examination of online materials. It documents the contemporary history of the development of the movement from a feminist perspective. Findings show that movement participants see beauty practice as social oppression imposed on women’s bodies and appearances and the marker of women’s low social status. The new wave of an online feminist movement that emerged in 2015 created women-only communities that enabled South Korean women to share their personal experiences as women and to reach the conclusion that in order to reject femininity and sexual objectifi-cation of women, they needed to take off the corset collectively. Awareness was manifested by encouraging other women to reject beauty practice and display their own tal-corset prac-tice online and offline. This article argues that tal-corset movement is a feminist political movement that aims to eradicate femininity as social oppression. Female solidarity and connectedness played an essential role in forming the rationale and the tactics of the movement.