This Wicked fan-art contains
fedora, chapeau de feutre, homburg, stetson, trilby, hombourg, and chapeau de feutre trilby.
There might also be
plaisancier, leghorn, panama, marin, skimmer, chapeau de paille, barbeau, chapeau, écumoire, paille, canotier, livourne, chapeau panama, sailor, robe chapeau, chapeau haut, opéra, chapeau de soie, cloisonnée, chapeau, haut de forme, le castor, habillement chapeau, chapeau d'opéra, stovepipe, chapeau haut de forme, topper, castor, robe, opera hat, and tuyau de poêle.
Dianne Pilkington discusses her costume changes in playing Glinda the good witch in Wicked. This involves nine costume changes, but only seven actual different costumes. V&A Theatre & Performance Dept.