Natalie Portman has given birth to a healthy baby boy Us magazine is reporting.

The Syosset, New York actress gave birth on Tuesday sources said.

The 30-year-old Black Swan star and her boyfriend, 33-year-old French dancer Benjamin Milliped are said to be ecstatic at the news.

The pair fell in love on the set of Black Swan where Milliped's character, ironically refuses to sleep with Portman's character.

He was choreographer and co-star in the movie.

"It was seductive to watch them," a source on set told Us Magazine "There was no way the attraction could be missed. I don't think he could help himself -- she's dazzling!"

The pair announced their pregnancy and engagement in December.

The Oscar winning actress had told reporters that "One of the most exciting things about being pregnant is that I'm accepting the complete unknown. It's a complete mystery and miracle," "It's really just accepting that I have no idea, which is what all of us live every day.

She also revealed that she had changed her strict Vegan diet . "I actually went back to being vegetarian when I became pregnant, just because I felt like I wanted that stuff," she said in an April radio interview. "I was listening to my body to have eggs and dairy and that sort of stuff."