Well, I'd suggest gaining weight first off. But until then, have you checked out the kids section in stores? A buddy of mine who is real small grabs some stuff from the kids section...he used to shop almost exclusively from the kids section in Highschool
Be a mature individual, who makes decisions and takes actions based on his wants and needs, not his insecurities or lack of ability. A man is direct, strong willed, confident, does not care what other people think and makes no excuses for who he is. A man is not weak, he is strong.