I have been to a couple of interviews where the men did not wear suits but wore blazers with non-matching slacks. They stood out from the group and not in a positive way -- it looked too casual in my opinion.
The majority of women have been wearing pants suits.
Something I have noticed is people carrying very casual bags with them (not luggage) -- I noticed one backpack with huge orange and yellow logos on it and another bright portfolio (in the applicant's school colors). It really took away from what would be an otherwise professional appearance.
Then again, I was so bored at a couple of the interviews that I had nothing better to do than play fashion police.
