A "Dress Rehearsal" is a practice session for a performance, such as a play, musical, or dance recital. During this rehearsal, performers wear their complete costumes and use all the props and set pieces they will use in the actual show. This helps everyone get accustomed to the final look and feel of the performance. The purpose of a dress rehearsal is to ensure that all elements of the production come together smoothly. It allows the cast and crew to identify any issues with timing, staging, or technical aspects, ensuring that the final performance is polished and professional.