Size Zero for fashion or movies - which is worse bettween these two?

If an actor is doing it for a movie role, odds are good that they have consulted with a physician and a trainer and various other professionals so they can be sure not to do permanent damage. There's also the fact that this is a temporary situation and they probably work hard to plan their recovery once it's over. If someone is starving for fashion, they probably aren't taking the same precautions.