Hollywood worships big movie franchises, so fans can expect 'Barbie' sequels. One plot proposal quickly emerged from an unlikely source — Sister Mary Joseph Calore of the Society Devoted to the Sacred Heart of Jesus in St. Cresson, Pennsylvania.
''Barbie becomes a nun' would be a great sequel,' she wrote on the X platform. Her post contained this pitch to Warner Bros. executives: 'Dissatisfied by e…