I wouldn't be nervous at all, especially with the way the youth dresses now a days. My wife and I see young men and boys wearing shirts that a very large individual would swim in, pants six inches below their rears, or all dressed in black with eye liner on and metal spikes on random pieces of leather wrist things. Sometimes, all of the above. Then we will see young girls, not even of legal age, wearing clothes that would expose even Victoria's best kept Secrets. What I am getting at is that if these young men, women, boys, and girls can step out of their homes dressed in such ways and not be embarrassed (or their parents let them out that way) by the way they look, then you should not be embarrassed or nervous by being dressed nicely.