Clint Eastwood's musical remake had been due to start shooting in February 2012, but insiders on the film told Deadline Hollywood that Warner Bros 'could push' the start date on the film.
It is also claimed the delay to the start of shooting will give them longer to find a suitable leading man after Eastwood failed to convince Leonardo DiCaprio to sign on.
Delay: Filming of A Star Is Born could be pushed back after Beyoncé announced she is expecting her first child with husband Jay-Z
She will play up and coming starlet Esther Blodgett, later Vicki Lester, who falls for a has-been rockstar.
Beyoncé proved her acting chops in Oscar-winning musical Dreamgirls in 2006, as well as portraying Etta James in Cadillac Records.
The 29-year-old singer announced at last night's MTV VMA Awards that she and husband Jay-Z are expecting their first child together.
Congratulations: Kelly Rowland, who was in Destiny's Child with Beyonce and Michelle Williams, came forward to publicly offer her friend congratulations
She told America's People magazine: 'I have known for quite a while, and she's happy, and Jay is happy, and that's all that counts.
'I think she'll be an incredible mother, because she's always been motherly. I think that she takes after so many traits from her mother. And I just think it's going to be so natural for her. Its natural for her now!'
Last night Beyoncé debuted her baby bump in an orange Lanvin gown and told the assembled press: 'I have a surprise!'
And the singer didn't let her pregnancy prevent her from bringing the house down with an energetic performance.
She cheered on Jay-Z, who performed new single Otis with Kanye West, before taking to the stage herself.
Arriving onstage in a purple glittery blazer and black trousers by Dolce & Gabbana, the mother-to-be said: 'I want you to feel the love that's growing inside of me.'
Content: The singer glowed with happiness as she clutched her baby bump
aternity chic: The 29-year-old chose a bright draped gown by Lanvin for her debut maternity dress
The cameras panned to the audience where Jay-Z was beaming, as his friend Kanye jumped up and down, smacking the father-to-be on the back and shaking him.
Beyoncé performed at the Roseland Ballroom in New York on August 14, and covered up her stomach with a sheath of fabric that draped lightly across her protruding bump.
Proud mama: After her performance Beyoncé ripped open her blazer and rubbed her baby bump
Beyoncé, who has won 16 Grammy awards, said in a recent interview that she feels she has achieved enough in her career to settle down and make family a priority.
'When you're young - 18 or 19 - you have the energy and drive. That's the time to work as hard as you can,' she told the September issue of In Style.
Congratulations! Jay-Z beamed from the audience while Kanye West thumped his friend on the back
'I can decide I want to have kids. I can be the mother I want to be and dedicate myself to my children.'
Beyoncé married rapper Jay-Z on September 4, 2008 in New York.
Cover up: Beyoncé covered her stomach with a sheath of material during a performance at the Roseland Ballroom on August 14
Speaking to Piers Morgan in June, she hinted: 'I always said I was going to have a baby at 30. I'm 29 now.
'But I also said I was going to retire at 30. So I don't know,' she said, adding: 'I am not retiring, I tell you.'
Pressed by Morgan she said: 'Only God knows, only God knows.'
Parents-to-be: Beyoncé and Jay-Z married in an intimate ceremony in New York on September 4, 2008
