Closed-toed shoes or short heels with neutral colors.
Avoid open toe shoes, such as sandals, flip flops, etc and really high heels.
Tailored skirt or pants, with a matching business jacket.
Tailored blouse appropriate to the suit.
Manicured nails, with no wild nail colors.
Avoid overly dramatic makeup.
Avoid wearing perfume. Some people are allergic to certain perfume smells.
Select a conservative handbag.
Be sure your hair is neat and styled.