The Holiday star, currently touring Europe, is so terrified that she refuses to leave her hotel room unless she has to go to a performance.

All plans for sightseeing and shopping were cancelled after a Czech newspaper reported that crime bosses threatened to kill her and her two children.

A source says: "She is unbelievably nervous and worried about performing in Moscow next week. Because of that she wants to get home as soon as possible and doesn't want to be away a minute more than is necessary."