This Freaks and Geeks screencap contains
costume d'affaires and costume d’affaires.
There might also be
bien habillé personne, costume, costume pantalon, tailleur-pantalon, pantalon costume, pantsuit, personne bien habillé, and pantalon de costume.
John Francis Daley talks about being recognized, why the montrer is so special and... making a play about a volcano? At the F&G reunion at PaleyFest 2011 with GiveMeMyRemoteTV.