Prognosis Preggers for Grey's Anatomy Star Ellen Pompeo

Meredith Grey's anatomy is rapidly enlarging: Ellen Pompeo has a McBun in the oven, her rep confirms to E! News.

This will be the first child for Pompeo, 39, and husband, Chris Ivery, 41.

"It's great news. They're ecstatic," Jennifer Allen told People, who first reported the happy news.

The Grey's Anatomy star and her music-producing beau wed in 2007.

With the show wrapping soon for its summer hiatus, it's unlikely Pompeo's pregnancy will need to be addressed in a TV storyline.

But there appears to be something in the water at Seattle Grace. Chyler Leigh, who plays Pompeo's onscreen sister, Lexie Grey, is due with her third child next month, and producers managed to keep her burgeoning belly disguised.