If you’re living in Asia I’d recommend getting a tailor-made suit. The price is very reasonable and the fit is a lot better than off-the-rack. You’ll never buy off the rack again. The tailor will have many fabrics to choose from, but pick a very simple dark blue fabric. The style should be conservative and single-breasted, with nothing fancy like wide lapels or four buttons. I guess I’m getting old because I always used to wear suits with two buttons, but three seems to be standard now.
While you’re at the tailor, have a couple of shirts made too. I would suggest a white shirt for your interview–it is more serious than blue. Of course a red tie looks great with blue suit/white shirt, but other colors will do. I like to buy my ties in a department store, as I’ve found that most tailors stock just cheap, shiny, gaudy ties.
I highly recommend my tailor, located on the South side of Minsheng E Rd, a few blocks to the East of the intersection of Minsheng and Tunhua, but there are many who can do a decent job. If you’re not in Asia go to a big store with lots of suits, like Macys for instance, where you can try on several different brands till you find one you like.
Good luck on your interviews.