Initially, studio audience members came in their Sunday best - suits and ties and nice dresses. But, shortly into the show's run, a single audience member carried a sign to try to get Monty's attention, and he picked her. That single sign became more signs, then costumes, hollering... anything an audience member could think of to become the lucky person Monty picked next. The free-for-all with the audience became a hallmark of the show. Signs often held jokes or puns which linked in some way to their costume. The costumes were often outrageous and included hats, which could be rather large. The joking-banter between Monty Hall and the contestant after being chosen was also a trademark of the show.