Psychologically and professionally speaking, DEV's advice is correct, however for most relationships (especially for men), there has to be a catalyst of physical attraction for any reaction to begin.
Although some relationships spark and develop based upon alternative variables, we must remember (although we try to separate ourselves due to our immese evolution) that we ARE animals.
Men in particular are extremely visual creatures, and there are prototypes that are deliberately sought out, whether it be due to ones own natural desires or what such man is "told" represents what is appealing.
Plastic surgery can assist people in correcting what they perceive to be as flaws, while most times, making them feel better about themselves. Confidence is an attractive trait that members of the opposite sex will often be drawn to, even when an individual may be atypical of one's common preference.