wow, 我听不少朋友讲，只要整洁即可，不一定要穿西服, 所以前两个面试都是外穿绵甲克,西裤,内穿棉素格村衣，未系tie(冬天). 希望fail的理由不是这个! I really confuse to this question, as one company (sysbase canada) send mail to me that i can waer casually.