"男式白衬衫" can be translated into English as "men's white shirt" or "white men's shirt".
Both expressions are commonly used, with "men's white shirt" slightly more straightforward in structure, where "men's" indicates the gender and "white shirt" describes the color and type of clothing. "White men's shirt" is also correct, with the adjective "white" preceding the noun phrase "men's shirt" to specify the color.