Madonna is in trouble with an animal rights group that criticised her for wearing what they say is a fur coat.
People for the Ethical Treatment of Animals (Peta) accused the singer of ignoring cruelty to animals by wearing a coat made of chinchilla fur.
They want her to see a film of animals being killed for their fur so she understands how fur coats are made.
She was snapped wearing the coat when she left a restaurant, but she hasn't said if it was real fur or not.
The head of Peta in Europe said it was important that people understood how cruel fur was.
She said the way animals like chinchillas were killed caused them a lot of pain.
Madonna is designing clothes for a big chain of shops, H&M. Their website says they don't use fur in any of their clothes, and only use leather from animals killed for their meat.