Rachel WeiszRachel WeiszShe already put the yummy in mummy when she starred alongside Brendan Fraser in 1999.

Now Rachel Weisz is doing it for real.

The 34-year-old has revealed that she's five months pregnant.

Although The Constant Gardener star admitted she became broody on the set of her latest movie, she only blurted the news out on the US chat show The Tonight Show on Friday.

"It's a slightly modern situation," laughed Rachel. "I'm supposed to have organised the wedding, but we got a little ahead of ourselves. I'm trying to figure it out now."

Cambridge-educated Rachel has been linked to Neil Morrissey and Kate Winslet's hubby Sam Mendes in the past. Now she's engaged to maverick filmmaker Darren Aronofsky.

Rachel and Darren Rachel and Darren Who, exactly?

New Yorker Darren, 36, attended Harvard, and came up with the concept for the successful film Pi.

Rachel reckons he's a real catch.

"I found myself a sophisticated, educated American. He's not an actor. He's travelled the world. He knows where Europe is, unlike a lot of Americans. He's very cultured, but he's all man."

We wish them all the best. And as for the sex of the baby, maybe it will be another case of life imitating art. Don't forget, Rachel once starred in About A Boy...