Katie Song Father, son and house of Gaga. Method acting aside, Lady Gaga worked through both a physical and mental transformation to play her character inspired by the real-life Patrizia Reggiani.“I’d say truly the most challenging part was playing a murderer,” Gaga told Variety’s Marc Malkin at the red carpet premiere of the film at the Academy Museum in Los Angeles. “But I will say that after a lot of research, I realized that she knows that she made a big mistake, and it was a lot of trauma that drove her towards this huge mistake that I know she regrets.
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