Speaking about volumes, Japanese designers are very interesting and they are the best ones in making "extravagant clothes". Commes des Garçons' family (Tao, Rei, Junya) developed big volumes on skirt and top with, sometimes, asimmetry in a way that is absolutely innovative. Yamamoto, who normally uses long and slim silhouettes, decides to create a big knot that makes the coat just right for very convinced fashionistas. V&R are maybe the only designers who are able to develop such big volumes (think to that s/s where, quoting world economic crisis, they produced exagerate gowns with some "holes"...).
However, Valli created nice volmes on skirts...but Margiela, the Belgian designer who influenced our fashion era in such an important way, designed a really "strange shirt". In particular the top looks like a flat squared which modifies at all the silhouette of woman body. It's of course an important piece of design but I don't think that this could really have a commercial succes or being wearable. And CDG top is of course unwearable (this is only a good fashion creation), Viktor and Rolf are unwearable too, I think... So, Valli and Tao (unexpectedlyfor this last one...) are absolutely perfect in the right occasions.