Can You Claim a Deduction for Dry Cleaning?

What sort of clothing can you claim a deduction for as an expense? The general pub test is, does the public easily recognize your occupation based on the clothing? For example, a chef's checkered pants or a nurse's scrubs. There are some professions that need protective clothing. You can't claim deductions on things you haven't paid for. And to be honest, I've never claimed dry cleaning or laundromat expenses.