When I was a kid I was inspired by a movie. It might have been made for TV (80s/90s). I understood and remembered the story as about siblings, 2 girls and a guy. One girl was a photographer, other girl a painter and would paint murals with actual living actors in them (body paint), and the brother was a video game designer. The parents did not approve of their lifestyle. The lived in an old building with a fashion designer, thought was gay but was straight, who liked one of the sisters?
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Are you sure it wasn't a TV show ? It sounds like a show i used to watch a lot as a child.
