And it's also moot because the running rumot is to wear a navy blue suit, white shirt, red tie to a Delta interview. If one does that, then they aren't assembling clothes on their own. Now, to your point, I have absolutely no idea if Delta recruiters really care if you wear that suit or a Don Cherry suit.
Always crossing Virginia avenue, you see guys in the above and the first thought is, "Oh, must be conducting interviews today, huh…"
Just look sharp and wear it well, whatever it is.
Remember, your competition is.