As women have always instinctively known, men are visual creatures! That's why we spend time on our hair, make-up and clothes.
However the best way to initiate romance with a guy is through the eyes. A slightly prolonged moment of eye contact lets him know you're interested and entices him to look further. Sure it's important to take care you always look your best, but subtlety is always a good idea. Never reveal too much, so nothing is left to the imagination.
When you make eye contact, try this little trick. Tip your chin down and a little away from him, and then look up top meet his gaze. Devastating.