The discussion centers around the appropriate dress code for a PhD visiting weekend, specifically for prospective students visiting a university. Participants emphasize that business casual is generally a safe choice. For men, this typically includes a dress shirt, khakis, and non-athletic shoes, with ties being optional. Women are advised to wear professional yet comfortable attire, such as sensible shoes, pants, or mid-length skirts, while avoiding overly formal options like suits or overly casual items like t-shirts. The conversation highlights that while some faculty may have personal preferences, most academics are not overly concerned with attire, and the context of the visit, such as campus tours, should be considered. Additionally, there is an acknowledgment of geographical variations in dress expectations.