Eastwood recently said he planned to begin work on the movie musical in about six months, but Beyonce said Tuesday other work commitments are preventing her from starring in the picture.
"I was looking forward to the production of 'A Star is Born' and the opportunity to work with Clint Eastwood," she told E! News. "For months we tried to coordinate our schedules to bring this remake to life but it was just not possible. Hopefully in the future we will get a chance to work together."
The Grammy Award winner gave birth to her first child, a daughter last year. She has previously appeared in the music-themed movies "Cadillac Records" and "Dreamgirls."