For a Bain interview, a suit or equivalent professional business attire remains the lowest-risk choice unless the recruiter explicitly gives a different dress code.

You do not need to dress like every day is an interview. Start with polished business casual that can become more formal with a blazer or different shoes.

Start with versatility. Two or three pairs of trousers, several tops or shirts, one good blazer, comfortable professional shoes, and a bag that works for commuting or travel can cover a surprising number of situations.

In many offices, normal days are closer to polished business casual than full suits. Think chinos or wool trousers, button-downs or polos depending on the office, a few knit layers, and clean leather shoes or other office-appropriate footwear.

There are usually broad professionalism expectations, but the day-to-day standard is heavily influenced by office culture, client environment, and the type of work you are doing.

Build around a small number of pieces that can move between business casual and client-facing settings. A few trousers, simple blouses or knit tops, one or two blazers, comfortable professional shoes, and a neutral coat usually give you more flexibility than buying full matching suits.