As a corporate attorney I keep these items on rotation and style them in many different ways.
Trousers that look professional but feel soft and airy. Use these often and are very durable (ublike many other trousers)
High-Rise Stretch Pant
Have this top in different colors. On sale! Form fitting.
High-Neck Basic Top
One of my favorite vests. I love vests for work. You can pair with a skirt, jeans, trousers, etc and will look professional and fashionable. Bonus: Same material as the high-rise pant stretch I linked.
Navy Vest
This vest has saved me several times. It is the perffect top for meetings and lunches. Longer style for a more professional look.
Black Vest
Great shape and affordable
Women's A&F Forme Bootcut Pant | Women's Office Approved
Goes great with the brown Abercrombie pants I linked. Essentially a whole suit for under 200.
Women's A&F Forme Slim Blazer | Women's Office Approved