The reviews for Morgan Stanley don't provide explicit details about the dress code. However, given the nature of the company and industry, it's likely that the dress code is business professional, especially in client-facing roles. Employees typically dress formally for meetings and interactions with clients, reflecting the professional finance environment.
If you're considering a position there or just curious, you might want to dress in business attire when visiting the office or attending interviews. It'll help you fit in with the corporate culture!