They say in US Vogue that it's really interesting to see someone so young play her. In that article, they say (bluntly) "It's a play about a f---..." Two people who shouldn't hook up and they discuss the consequences of it. It's a demanding role that's usually played by someone in her 30s, so congrats to Sienna on landing the part! Maybe that's why her style changed, because she's matured and wants to be taken seriously as an actress and not be known for her clothes. She said in an Elle interview that so many people go confused about what she was-model or actress or singer, which I'm sure she did not like, and that makes sense.
Has it come out yet? What are her reviews?