http://www.danzaballet.com/modules.php?name=News&file=article&sid=3996
http://revistaelbosco.blogspot.com/2011/07/giselle-por-mats-ek.html
Costume is very different to the first Giselle. Giselle wears a pink jumper and skirt in Act1. However in Act 2 in the mental institution she wears white along with all the other women. This suggests purity and cleansiness.
The royals wear blacks and dark reds, frills, the girls hair is neatly tied back, this shows their rich and can afford expensive clothes. Their higher up on the social hierachy.
The villagers wear black, have sticks and wear hats. This shows they work on the countryside, in rural areas, their like farmers, suggesting their poor.
The costume clearly shows whos who, you can tell what character everyone is.
