Portman is pregnant! Natalie Portman is expecting her second child with her husband, Benjamin Millepied, a source reveals exclusively to Us Weekly.

The Oscar winner, 35, debuted her growing baby bump at the premiere of her film Planetarium at the Venice Film Festival on Thursday, September 8. She wore a white one-shouldered Dior dress on the red carpet.

The Black Swan actress didn't appear to be keeping her pregnancy a secret either. An onlooker tells Us that the actress was rubbing her belly at the star-studded event.

Portman and Millepied, 39, met on the set of 2010’s Black Swan and married in 2012. (Millepied was a choreographer on the drama.) They are already parents of son Aleph, 5.

The Israeli-born star and the former director at the Paris Opera Ballet lived in the City of Light for two years before recently moving back to L.A.

In July, the No Strings Attached star explained how motherhood has changed the way she works. "I think being a mother made me realize how maternal the role of director is," she said during an interview with The New York Times magazine T. "It made me much calmer under stress because there’s that weird parent thing you develop, that when things get really bad, your voice gets calm and your blood pressure slows and you can make everything OK again. And things get bad and stressful easily on films."

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