The fast fashion processing industry is a very competitive segment and is dominated by most other large players. Therefore, smaller players need to grasp the market development strategies to navigate their customer base. If you want to develop a successful fast fashion chain market, managers need to know who their key customers are and what they will buy before developing marketing and advertising strategies. Accordingly, fast fashion brands are springing up more and more in Vietnam, each offering a different style. As can be seen, fast fashion chains are heavily dominated by the fast fashion processing industry and other large players. For smaller players, it is necessary to grasp what competitive market factors are, who are the target customers, what they want, where their main needs come from to devise a development strategy, develop the right fast fashion chain market to navigate its customers.