#ClaireDanes says Leonardo DiCaprio told her not to play with prop guns on the set of “Romeo + Juliet”: “I remember just blithely playing with the prop gun and putting it to my head, and Leo getting very serious and saying, ‘Claire, we don’t do that. Don’t eff around. He was right, but I was just being a doofus and a girl.” Watch the full #ActorsOnActors episode on the cnn app.