I remember Pier Angeli. I don't know her movies that well, but think she was in a religious movie once (Fatima/Song of Bernadette????) Not sure. But yea, that could be her.
As far as Rita Moreno, maybe. How old would Moreno have been in the 50's? I still say the guy who Brando has his arm around is "somebody". Ha ha...the face just looks familiar.

TIS