The importance of transparency, reliability and credibility in Sustainability Reports in the fashion industry has increased in recent years. We as a society have become more aware of the environmental and social impact we have on the planet. The study highlights the importance of progression of communication, transparency and CSR over a five year period in Sustainability Reports. As well, analyzes short- and long term goals communicated through a Sustainability Report by three Swedish fashion companies. Furthermore, this study investigates the increasing demand for transparency that makes it crucial for companies to disclose their efforts towards sustainability in a transparent and reliable manner. It was conducted through a thematic analysis where themes within the reports were collected. The results from the study show that there has been a progression to some extent with an increase of communication regarding credibility and focus on circularity. It showcases findings of transparency, communication, and CSR principles throughout the Sustainability Reports demonstrating a positive viewpoint. The evidence of the progression shown by the three companies in their short- and long term goals in the reports strengthens the underlying theme, how there currently is limited research on the importance of examining the evolution of their sustainability claims and assesses their actual impact on the environment and society as a whole. Additionally, the study addresses the challenges fashion companies face when creating Sustainability Reports.