I have a trademark speaking wardrobe. I always wear my famous Coogi sweaters when I present. These are these very bright and colorful sweaters that I got turned on to in Australia. These work best for me. They fit my personality and my results are always good when I’m wearing them.
Find out what works for you. Note what you’re wearing each time you present and tabulate the results. See what you tend to sell best in. Whatever works best, wear that outfit all the time.
You may find that your most effective wardrobe varies with your target audience. Some kinds of attendees may respond better to a suitand- tie look while others will buy like mad when you wear jeans and a humorous T-shirt. Within the bounds of good taste, you should experiment and keep track.
Once you find something that works well, don’t mess with success.