This combination of a navy and white crew-neck t-shirt and a blue suit is a real lifesaver when you need to look dapper but have zero time. Finishing off with oxford shoes is a fail-safe way to breathe an extra touch of style into this look. Entirely appropriate for hot weather, you can work this getup throughout the summer. An ideal outfit to make you a dapper gentleman over 30, rather than just a gentleman over 30.