Ermenegildo Zegna Pronunciation - eɾmeneˌʤildo ˈʣeɲɲa) (often abbreviated and known simply as zegna) is an italian luxury fashion house. Ermenegildo Zegna Pronunciation / eɾmeneˌʤildo ˈʣeɲɲa) (often abbreviated and known simply as zegna) is an italian luxury fashion house.