It's very easy to have a tailor or the alterations person at your dry cleaners put brace buttons on your pants if they don't already have them. The metal clip-ons are for the guys who wear short sleeve shirts with ties. No pens or pocket protectors in your shirt pocket. Pens go in your suit coat inside pocket, out of sight. In a nutshell Business suits or dresses are often the standard attire for women.
Hosiery is required with skirts at all times, along with dress shoes.
Don't wear short or extra long skirts. Keep them at knee length. Don't wear excessive high heel shoes. Don't wear tight clothing. No sleeveless, strapless, or spaghetti-strapped clothing.