The textile and fashion industry is one of the most polluting and resource-wasting industries in the world. At the moment, approximately 55% of all end-of-life textiles are incinerated in the Netherlands as they end up in residual household waste. It is becoming imperative to examine effective ways to improve individual’s textile recycling behaviour to facilitate a more sustainable and circular textile industry. This research seeks to understand how two nudging interventions, designed based on a framework from environmental psychology, can effectively increase textile recycling in the municipality of Leiden, which was used as a local case study. First, an online survey (n = 182) was conducted to explore the determinants of citizen’s textile recycling intention (Study 1). The study used a comprehensive model in which the Norm Activation Model (NAM) and the Theory of Planned Behaviour (TPB) were combined. The multiple regression analysis reveals that attitude was the strongest determinant of intention to recycle textile, followed by outcome efficacy. Guided by the insights from the online survey and nudging theory, an informational nudge and an outcome efficacy nudge were designed and evaluated (Study 2). The effect of the nudging interventions was assessed by conducting a field experiment. The descriptive analysis shows a percentual increase in textile recycling in both treatments groups compared to the control group, however, the findings of the one-way ANOVA analysis demonstrate that this increase was non-statistically significant. Nevertheless, this research shows that the integration of TPB and NAM contributes to a more comprehensive model to encourage textile recycling behaviour. Future studies should investigate the application of the two nudging interventions at a larger scale and the long-term effects. Consequently, the implications of the findings are also discussed and suggestions are provided for local authorities to improve textile recycling schemes and campaigns.