Being a movie star is not as glamorous as it might appear. It is not an easy task being a movie star, especially at the starting point. It simply looks as if you are doing a marketing business, marketing yourself as a product to earn a few. The stress to pass through and the money to spend to make the career a reality are not things to joke with. Going to classes (if demanded), and probably first learning under a coach would surely require some expenses. Getting an agent or getting hooked up with a casting director to make you earn an opportunity to feature in a movie or TV show will most likely be an uphill task.
The more disgusting part of it is that all the input efforts still don't guarantee that you will have success. It is still on probability. Though the ones that seem to have made it through in the industry make it seem as if being a movie star is glamorous. That also shows that some can make it through, but just a few.
When movie stars appear on television, they often appear glamorous because they have professional make-up artists and fashion stylists to help them look that way. If you read tabloids you will see candid photos of movie stars in their everyday life. In these photos, the movie stars often look much less glamorous. Movie stars do typically make much more money than the rest of society however, so their ability to look glamorous or even just stylish is much greater than an average person.
Movie stars will also sometimes complain about their demanding schedules and constant public attention, which does not seem very glamorous to me.