Are these shoes okay to wear to an interview?

I agree with the answer regarding wearing closed shoes. However, wearing shoes that expose more of your feet is definitely more intriguing. Men and people in business typically notice your footwear right away. If you come across looking like you take care of your feet and wear nice heels, I would make the connection that you put a lot of attention to detail in your work. Definitely wear pantyhose. That would look classy and very hot in the heels:). A good touch!