Actress Natalie Portman turned her little baby bump into a sizable publicity bump during the media rounds for her 2010 hit "Black Swan" -- and now the move has finally delivered.

A baby, that is.

News broke last night that Portman gave birth to a baby boy, her first child with fiance/choreographer Benjamin Millepied. No word if the kid's name will stack up to other Hollywood tikes' oddball names (Apple, Suri and Pilot Inspektor come to mind...), but knowing the grounded, reserved and highly intellectual Portman -- she studied at Harvard after all -- expect her to keep it classy.

Portman's private life has always been just that, allowing her work to do the talking. But last year's "Black Swan" Oscar-buzz, which lead to her eventual Best Actress win, kept her pregnancy in the limelight, for better or worse. When the news broke last night, social media went a-flutter, with well-wishers taking to the 'net to blast out hashtagged celebratory messages to the new starlet mother. There's no greater gift than a "congrats" from Lindsay Lohan, after all.

Portman has had a jam-packed 2011, with "Black Swan" garnering high praise and big box office, along with other roles in "The Other Woman," "No Strings Attached," "Your Highness" and "Thor." Whether she'll jump into a new film or not is yet to be seen -- the role of "Mom" may take precedent!