I algree that the suit sounds perfect. Skirt suit is considered more professional and sheer pantyhose are not tacky but expected in most circles. Make sure to not wear open toed shoes. I learned a bit about 'professional dress' from an argument with a fellow medical school admissions committee member. Believe it or not she didn't want to admit a women who committed the sin of wearing open toed shoes to her interview. You can tell which side of the arument I was on, but what I tell my daughter is that you want to be sure to not offend anyone by how you are dressed. It goes without saying you should look neat and professional. Well groomed, but not covered in makeup, etc., at least if you want to get into medical school. As for the particular job you are applying for, I have no clue.