We believe that our environment is a major determinant for our self (personality and characteristic) but only defines us to a certain extent whilst there are other factors that make us us such as nature.
Counter: Clothes do not necessarily have to reflect the environment (non-physical) of people as people must wear clothes in public and have no choice by public law.
Counter Counter: Even so, some people still buy the latest trends in clothing although they could be fine with simple clothing (plain t-shirts & jeans). Religious people still wear their cultural/religious clothes.
Counter counter: Although this may be true, people will still experience situations similar to others and will develop a taste in similar genres. Some people have been raised and influenced in similar ways like others and thus share similarities.
Counter: There is not necessarily a relationship between language and level of society (or environment) as a strong minority chooses the way they speak to be part of a group or to be different from others. Also a person may become homeless and live on the street but still talk in perfect english.
Counter Counter: In most cases, people speak the way they do unaware of it and unconcerned about it which shows that they are naturally affected by their environment.