This Joseph Gordon-Levitt photo contains
costume d'affaires and costume d’affaires.
There might also be
costume, costume de vêtements, costume trois pièces, costume double boutonnage, and combinaison à double boutonnage.
A mini-movie/musical they made for the movie set to Why Don't toi Let Me Stay Here?. I knew he could act and sing, apparently dancing is in his repertoire as well.