Stylish "office" wear

Hi, I'm 62kg and 170cm.

I'm starting a job in an MNC in downtown marina soon and I want to know where to get the most affordable and fitting office wear for male.

I like white shirt and navy blue pants, black shoes. I also have a "back comb" like a typical insurance agent (not working in insurance).

Any ideas? I like it to be fitting and sleek.