I believe I present better wearing a tie and no microphone.
That doesn’t meant I will be wearing a tie and no microphone at my next presentation.
Be ready for the wardrobe the customer wants and the venue requires.
Have outfits (Costumes!) you are comfortable in wearing. Have shoes that won’t have your feet barking at the halfway point.
Keep a bevy of wardrobe options clean and available: suits, business casual, casual, tanks and shorts. And be comfortable in delivering your message in each.
Wear a wardrobe appropriate costume for your dress rehearsal. Be sure to include shoes.
On Presentation Day, dress as close to the venue as possible; you don’t want soggy shoes or a drenched suit.
How You Look Saying It is as important as What You Say.