A strong suit in a dark colour with an unusual jacket is a good way to start. Crew necked t-shirts or strongly structured buttoned shirts work as well.

Boots are a good way to keep the look strong, either chunky (think Docs or similar) or with an agressive point. If you prefer flat boots, consider a pair of cowboy boots. Covered by your pants they just add a hint of detail but are still agressive.

If you really want to go the whole way, consider wearing a tie, or a scarf as a tie. With a vest for a 3-peice suit look it’s a fierce look. I do this one in winter and I feel/look great.

Invest in professional pieces that will build up your wardrobe as dictated by fit/finish/cut that will aid in making you look crisp versus dowdy: black work trousers (boot leg cut perhaps?), button-up blouses, v-sweaters/cardigans, blazers, shoes (boots, flats, fashionable sneakers, etc.), accessories (watch, work bag, belt).

Consider your color palette and finish of your clothes (edging, buttons, detail work) and how that can be reflected in your clothes (do you favor brights? prefer neutrals? hate pastels?).

I always rule on whether the work clothes i wear can transition from outside work (to ensure you’re comfortable in it and that pieces can serve multiple purposes). If you feel confident in your clothes, they’ll make you look confident to those you work with.

Good places to take a look: Gap/Banana Republic/Old Navy, Urban Outfitters, Zara, Nordstroms. Good luck!