I interview a lot of people for jobs at a big pharma company famous for their baby shampoo (probably a pretty big hint to where I work). I think the white jacket would make you stand out in a bad way (you want the person to be thinking of you as a future doctor, not as the person trying to be cool). The above outfit is great if you are trying to get a guy to ask you out at happy hour (well dressed business casual). Conservative is best for interviews. I actually don't like the first link below, but the other two could work. Definitely err on the conservative side... the more conservative, the more serious you appear to be taking the interview. About 50% of the first impression will come just from the way you look.
Here is a list of items for a woman:
• Suit (navy, black or dark grey)
• The suit skirt should be long enough so you can sit down comfortably (I also urge you if wearing pants to stay away from thongs. Just proper underwear with clean lines).
• Coordinated blouse (avoid bright colors)
• Conservative shoes (closed toed)
• Limited jewelry (no dangling earrings or arms full of bracelets)
• Professional hairstyle
• Light make-up / perfume (ideally no perfume)
• Neatly manicured clean nails (I'd recommend both hand and feet even though no one is going to see your feet, but a lot of women feel better about it)
• Portfolio file with documents properly organized (I'm not sure if this applies to med schools, but in pharma interviews this is a must).
If you want a second opinion before purchasing, feel free to PM me.