The thing you should notice about clothing is how it forms on the body; baggy clothes do not reveal to much on the figure of the person. The are more folds on the clothes and lines increase when there is wind blowing. Lines are also gathered when there is stress on the clothing material (for example, the arm that is bending). Of course then there is spandex (ugh!) which reveals muscle structure and (ugh!!) everthing else on the human body. For more realistic styles of clothing, you may have to study other people's day to day wear.