It sounds like a basic question, but it’s not that simple. Knowing how to dress for your audience is a skill. Many attorneys still abide by the standard suit and tie, thinking that it’s better to overdress. But a suit and tie may actually put a giant chasm of class distinction between you and your client.
Rule of Thumb: Dress one “level” higher than you believe your client or prospect will dress. No more. At speaking engagements for moms’ groups, I don’t wear a skirt, blouse, and heels. Instead, I usually wear nice slacks or even nice jeans, a blouse and jewelry (for a woman) and boots or clogs. For a man, a collared shirt, slacks, and loafers (no tie) is fine. Any more dressed up, a mom is liable to feel separate from you when you really want them to identify and bond with you.
Moms are often barely able to shower each day, especially when their children are very young. An attorney that is perfectly manicured, overdressed, and super-professional is off-putting. They want to be with people that understand them and their very overworked life.
But look like a slacker? Don’t do that either!