A makeup artist who worked on the "Slumber Party" music video with Britney and Sam Asghari is speaking up.   "Okay, so the reason that I posted Sam's reply to my #FreeBritney-post was that he's unable to speak for himself. He's under difficult limitations and can't express himself and that how he feels and I want people to know because I think it's sad that fans actually thinks that he has something to do with this conservatorship or the dad or getting paid somehow to control her, when