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The real-life inspiration for the new film “Breathe,” Diana Cavendish, attended a screening Monday.

The film starring Claire Foy focuses on Diana and her husband Robin (played by Andrew Garfield) who was diagnosed with polio at 28 and helped create medical devices to aid other victims of the disease.

Their son, Jonathan, produced, saying, “The first time I showed [a 10-minute clip] of the film to my mom, she says, ‘Oh, I would never have worn that hat!’ ”