The purpose of this study is to explain and obtain empirical evidence about the effect of trust on perceived usefulness, the effect of trust and perceived usefulness on buying interest. The population in this study is consumers in the city of Denpasar who have an interest in buying fashion products at the online store Zalora. The number of samples used in this study were 110 respondents. The data analysis technique used in this research is Path Analysis. The results showed that trust has a positive and significant effect on perceived usefulness, trust has a positive and significant effect on consumer buying interest, perceived usefulness has a positive and significant effect on consumer buying interest, and perceived usefulness positively and significantly mediates the effect of trust in consumer buying interest. This has the meaning that consumers who already have confidence in Zalora's online store fashion products, then supported by the perception of good benefits for consumers, can increase consumer buying interest in the online site Zalora.
Keywords: perceived usefulness, trust, buying interest, online shop, fashion