Former supermodel Ana Lucia Alves is now a whistleblower (or at least claims to be one) who has talked about handlers, human trafficking, etc, in fashion and showbusiness. According to her, the "price" that certain people pay to get superstardom differs. In some cases, it's of a sexual nature (she claims that Heidi Klum and Naomi Campbell are likely high-class madams for the Elite who pimp out the models working for them - a deal that she herself was offered but turned down). In other cases, the "price" is spreading propaganda (such as in Leonardo DiCaprio's case). She said that some mega-talented people like Gary Oldman don't have to make such deals at all to become superstars because they are so talented that showbusiness can't get along without them and leaves them alone. She claims to have met DiCaprio, and said that he seems like a nice person but is essentially living in a gilded cage with handlers all around him.

Here's a video of her talking about these things:

https://www.youtube.com/watch?v=8bcZyoe6Wx4