Being a feminist has been operationalized as a label (linked with activism), beliefs (associated with personal and interpersonal outcomes), and their combination. Using an internet survey completed by 220 American mid-western college women, we explored the unique and combined impact of feminist self-labeling with feminist beliefs on women's well-being, egalitarianism, and activism. Self-labeling was most clearly defined as a binary declaration of being a feminist or not, which alone was related to increased feminist activism above and beyond the impact of feminist beliefs. Furthermore, self-labeling, unlike feminist beliefs, was not related to personal well-being or interpersonal egalitarianism. Our findings confirm the exclusive and singular importance of self-labeling for enhanced feminist action.