Being a superstar needs you to look your best practically every time, which is not easy and demands a great deal of effort to maintain. Certain film parts demand performers to adopt new looks and endure alterations as well. While changing your appearance for a film is hardly novel, what is probably most intriguing is how certain celebrities did so in a healthy manner. Whether it's weight reduction or weight gain, we can all learn something from them. Here are some of the most remarkable makeovers we've witnessed over the years.