BeyoncePregnancyMovie230.jpgBeyoncé announced her pregnancy at Sunday night's Video Music Awards in a big way -- by holding her pregnant belly on the black carpet and during her performance.

However, Deadline is reporting that the pregnancy will affect another performance: B's starring role in the Clint Eastwood-directed movie A Star Is Born.

The musical, a re-make, was supposed to start shooting in February 2012. It would be the first time Beyoncé carried a movie on her own as the female lead (and maybe get her that Oscar she's been wanting so badly!).

But now the studio might push the flick back. Changing the dates, Deadline says, will also give Eastwood time to find a suitable leading man. Eastwood wants Leonardo DiCaprio but other names thrown around have included Will Smith and even Beyoncé's hubby Jay-Z!

We guess they could just bring the baby on set!

Another actress -- Hilary Duff -- has seen her career affected by her pregnancy ... but in a not-so-positive way. Find out how after the jump!