Two stars only because there are some glimpses of real acting.
Nicole Kidman needs a recovery centre to rediscover acting. She's become the Queen of Over acting. Everyone else on the cast are following her lead... The actor playing Amelia was most real, and Ishaan Khattar did a fairly reasonable job too.
Was so disappointed by Dakota Fanning and Liev Shreiber, though he did do a dissolute role quite well (always thought he was fantastic!)
Overall, I'd say, Don't go in with any expectation, given the 'star' cast.... 2/10 would be my rating.