This contest is just a simple appeal round then battling rounds. But with a difference. If you make it to the final,you dress up your pokemon with acessories,then choose another to mimic the dance routines on the dancing elites,before choosing another pokemon to battle your opponent. Thus,you must have at least 3 pokemon to enter. It is rumoured that the gym leader not only sometimes enters these contests,but is also one of the dancing elites.