Trousers, shirt and tie
Smart black shoes, Black Trousers, White shirt and Tie
Formal clothing; shirt, trousers and formal shoes whether you wear a tie is optional.
Smart pants and a shirt tie, nice polished shoes
For me the answer is something smart and casual that it makes him feel comfortable and strong with himself.
Nice trendy suit, trendy tie and cool haircut, nice smart shoes
I would always recommend shirt and tie for best first impressions