i dont know if your the right guy to give "dressing advice"  
but i have to agree with you...all the expos are full of white trash like that.
lol!................i hear ya 
I'm a t-shirt shorts guy.....................
 .........save the tank-tops for the Pros
(At the O id wear a nice shirt with a collar and dress pants,and I'm sure Laura would prolly wear a dress)