Dark trousers, light color plain shirt with pleasing color like light blue, cream etc. try to avoid checks shirts. black belt, socks matching with trousers. tie matching with shirt and trouser and not but not the least - shoes must be polished. better have a shoe shine in ur vehicle. suit is not advisable in indian context while attending interviews. moreover, dress according to the position for which ur attending the interview. If you are attending interview for the position of GM, then u can wear suit.