Dress For The Occasion
Know what to wear for when you present a speech
Why is this important?
Depending on your audience and what type of speech you are giving, how you dress can affect how people judge you when you are giving that speech. For example: someone might not take you seriously by how you dress and not really pay attention to what you are saying.
When giving a speech you want to wear something that would deem as "appropriate" for your audience. Depending on what type of speech you are giving, you might want to dress professionally.