I clicked on this hoping that a girl was asking. It seems like there are more guys concerned with this than girls. From the interview that I had, I think girls need to be more concerned with their attire.
If a girl reads this: Invest in a suit (skirt or pant), just because it's in the dress clothes department does not mean it's interview appropriate, do not wear any skirt/dress above the knees, and definitely do not wear a dress with brown boots as though you are heading to a country concert afterwards.
The last thing you want is your outfit to ruin your chances of getting into a program. Invest in a suit, even if it's a cheap one. I guarantee it'll make a difference. I'm not saying you'll get in just because you wear a suit but I doubt a school is going to accept an applicant that isn't mature enough to dress professional.