This Orgueil et Préjugés photo contains
costume d'affaires and costume d’affaires.
There might also be
costume, costume de vêtements, robe costume, robe complète, frac, manteau de queue, queues, cravate blanche, cravate blanche et la queue, robe longue, tailcoat, tail coat, tails, cravate blanche et queues, habit, robe pleine, queue de pie, and costume trois pièces.
A funny video put together of par a fan with the audio track from the Pride and Prejudice trailer using Harry Potter clips of Ron and Hermione. So cute!