Wear a conservative blouse with your suit. Do not wear bright colors, animal prints, or anything lacy, sheer, or low-cut.
Make-up and nail polish should be understated and flattering; shades that are neutral to your skin tone are generally advisable. Avoid bright or unusual colors or very long nails.
Keep your jewelry and hair accessories to a minimum, and stick to those that are not flashy, distracting, or shiny. One ring per hand is best.