Let me start out by saying that every job interview is different; what you wear and how you look during an interview highly depends on the job itself. This particular look and the following guidelines are for a job interview in healthcare. If you were interviewing for a position in a company that is more fashion-forward (e.g., PR, assistant, consultant) I believe the dress could be a bit more bold, trendy, and fashionable. However, for many jobs the interview is less about what you look like and more about what you know - that was the case here.
For this interview I wanted my resume and what I had to say to shine above everything else. This doesn't mean I threw fashion and beauty to the side, I just kept it as simple as possible.
Attire. I kept things simple, but tailored. Instead of going with a classic, three-piece suit, I incorporated three different pieces and three neutral colors. I felt as though this kept the look professional, but still modern. Instead of adding color through accessories like a necklace or bracelet I added my color through my bag.
Jewelry. The only jewelry I wore for this interview was large, pearl stud earrings (again, going simple and classic). However, I do think it would have been perfectly fine to put on a nice watch or even a simple necklace. I wanted to avoid anything that would have been too much. For example, multiple bracelets with a watch would have looked nice, but would have made too much noise - very distracting when you're trying to sell yourself.
Bag. Instead of carrying my purse and a bag with my resume and other relevant papers, and larger carry-all bag fit the bill. The large pockets on the side were great for easy access to pens and storage for my keys and there were pockets inside to house my wallet and cell (that was off!). The large bag not only offered a bit of color to my neutral look, but also was a simple and organized way to carry everything I needed.
Makeup. If I had a detailed picture of my face you would see my makeup is light and neutral. I put a tiny bit of concealer under my eyes, dusted my face with mineral powder to even the skin tone, and added a light dusting of a pink, matte blush to give my cheeks definition and color. I did a light, neutral smokey eye (light brown on my lid and a skin-tone tan blended in my crease), a thin and short winged eyeliner to open my eyes, and a couple strokes of mascara. On my lips I, again, kept things natural by using a lipstick that was the color of my lips.
Perfume. Don't wear it. Not to an interview. What may seem like a light spray to you could be suffocating to the interviewer. Even if it's light, someone else could smell it and easily become distracted.
Hair. Since my hair is longer I decided to go with an up-do. A simple ponytail, with a small section of my hair wrapped around the holder - to give a more polished look to a simple do. I didn't want my long hair in my face or all over the place during the interview. I considered just pulling and front pieces back and going with a half-up/half-down look, but the ponytail was just easier.
Nails. I took any nail polish that was already on off. While neons and pastel nails are all over the place right now, I'm pretty sure your interviewer won't appreciate it (unless you're interviewing for a trendy company). Again, staying with the simple and non-distracting look I decided to take my pink nail polish off. If you are someone that can't go out of the house without their nails perfect and polished - that's fine. Just choose a neutral color that won't grab attention.
Teeth. If you know of your interview in advance I would recommend using a teeth-whitening system. Even just a couple days of using white strips can make a difference. Bright white teeth are more pleasant to look at and aren't as distracting as yellow teeth - at least that's how I feel. Also be sure you brush your teeth, pop in a mint, or chew a piece of gum before the interview (but make sure you spit out the gum before going in - if you're forgetful, go with the mint).
Other tips. Here are a few other grooming and preparing tips to consider.
Clean up your eyebrows by plucking outlying hairs.
Get a hair cut/trim before the interview - you don't want split ends all over the place.
An interview is not the time to try out a new hair do or a new makeup look.
Consider comfortable shoes - there may be a tour as part of the interview and if there's not, you should ask for one.
Get ready early. You never know what may come up or go wrong while getting ready (someone could stop by the house or your hair might not be cooperating).
In a nutshell these tips and guidelines are more on the basis of keeping your look clean and simple. I made sure nothing that I was wearing or anything else about my looks was distracting. Again, this interview wasn't about selling my personal style, but about selling myself, my knowledge, and my skills. Good luck on your next interview!
P.S. - I got the job!