Britain's Got Talent sensation Boyle is working on plans for a movie detailing her rise to fame, and in October last year she named the "Mamma Mia!" star as her top casting choice, reported Daily Express.
"We are in the middle of negotiations just now for a film about my life. There's only one person I'd love to play me - and that's Julie Walters. She would do the job and you just know she would do my story justice," Boyle had said.
Walters is happy with the endorsement from Boyle, but said that movie bosses have yet to get in touch with an official offer.
"I'm really honoured, because I'm massively touched by her and she's got a gorgeous voice. Nobody has actually asked me to do it, just yet," Walters said.