Background: In fashion market, with the emergence of new brands and changing customer preference in style, competition is fierce nowadays. Brand is an intangible asset that fashion brands build and leverage to secure market position and customer loyalty, which leads to a competitive advantage. Among different brand building models and methods, co-branding alliance strategy is increasingly adopted between fashion brands in the past 20 years. Co-branding alliance refers to a marketing strategy that leveraging different brand names on a product or service, which suggests a strategic alliance between different brands. For fashion brands, either in fast fashion or luxury fashion, cobranding alliance with other brands is a popular trend. 

Purpose: This research aims to investigate the factors that influence the perception of the Chinese millennial consumers to purchase co-branding fashion products.

Method: Interpretivism philosophy and inductive approach are used in terms of methodology. Moreover, qualitative data are dominantly collected, and content analysis is conducted as analysis tool. A structured video interview is conducted through WeChat and open-end questions are asked to get empirical primary data. 

Conclusion: Chinese millennial consumers prefer the co-brand between LV and Supreme, compared with H&M and Moschino. It is noticed that currently Chinese young consumers have highly preference towards collaboration which has perfect fit of two brand images and perfect connection connecting the co-branded image with consumers’ self-image.