If you do prepare with all your dedication and your best effort - you will be able to pull it through! A lot more than just the way you look or what you are wearing, the message that your audience will keep is: you know what you're talking about!
Clothes can help you feel confident, but they will not do your job.
YOU DON'T NEED THE CLOTHES TO PROVE IT!
My name is T. S. Coelho and I live in Lisbon, Portugal, with my husband and three kids. I work in the asset management industry, managing an equities fund.