I am looking into the Majors and Large National Carriers and would like any practical input to current recommended interview attire.

I Currently have a simple black suit and a variety of conservative solid colored and patterned shirts. I have a variety of narrow and wide ties, nothing too flashy as well. Narrow is still "in" I believe.

I plan to purchase a couple of new suits and plan on a nice gray one and either another black one or a dark blue. The goal is to make sure that I am up on the current styles as well as making sure they are conservative and versatile enough for any airline interview.

Are any of the things mentioned above a no no?