With donning finest suit you may look handsome but your smartness will be judged with the answers you give during PI. It is said that with dress you become container but you need to prove that you have better stuff of immense value within you.
In PI you will be judged on your body language, presence of mind, gestures, maturity and focus on positivity.
It is advised to be sure for answers which you will give at PI. You need not bush around and be straight in responses.
Maintain eye contact with positive outlook and have can do attitude. This will help you to be successful in PI.