I once interviewed a woman in a slinky red dress that was so skimpy, she could barely sit down. While everyone knows that short hemlines and plunging necklines aren't acceptable for a job interview, wearing an inappropriate dress that's also a bright, flashy color--like red--simply makes this situation worse.
So, be mindful when choosing your clothes. If you're going to wear a daring color, like red, do it tactfully, making sure the overall design of your outfit is especially conservative. And, it's a good idea to avoid short hemlines and skin-tight fits altogether.