Is it appropriate to wear Hanfu on a blind date with your best friend?

Not appropriate. According to People's Life website, blind date with girlfriend is a formal occasion, which needs a quiet environment. Wearing Hanfu will attract others' attention and disturb the quiet environment, so it is not appropriate to wear Hanfu on blind date with your girlfriends. Hanfu is a traditional costume of the Han nationality, also known as Hanzhuang, Huafu and Hanfu. It is a national costume worn by the Han nationality from the Huangdi period to the end of Ming Dynasty.