The clothing needs to be necessary & ordinary to your business to be eligible as a business deduction.
Here is a TurboTax article regarding clothing deductions, Pay attention to the key takeaways:
https://turbotax.intuit.com/tax-tips/jobs-and-career/how-to-use-work-clothes-as-a-tax-deduction/L59P...
Regarding professional attire, suits or dresses are not deductible because they can be worn outside of events that are related to business.
