How many movies have Bill Shirley and Mary Costa acted in together?

They have worked on 3 movies together! Their first movie together was Sleeping Beauty (1959) while their highest rated movie together was Disney Princess Sing Along Songs, Vol. 1 - Once Upon A Dream (2004). They have not worked together since Disney Princess Sing Along Songs, Vol. 1 - Once Upon A Dream (2004). They are most known for their family films together.