"Final Dress" is a crucial rehearsal in theater production, typically held just before the official opening night. During this rehearsal, the cast performs the entire show in full costume, with all technical elements like lighting, sound, and set design fully integrated. This allows the production team to identify and resolve any last-minute issues. The purpose of the Final Dress is to ensure that everything runs smoothly and to give the performers a chance to experience the complete performance in a realistic setting. It serves as a final opportunity for the cast and crew to make adjustments before the audience arrives for the first show.