To complete an already eventful year for a pregnant Natalie Portman, 30, the actress and her fiancé, choreographer and director Benjamin Millepied, 33, have welcomed a baby boy. It's definitely a birthday week for the Portman-Millipied's, as Natalie celebrated a birthday of her own on June 9.

It seems 2011 brought the actress lots to celebrate. Even @LindsayLohan tweeted 'congrats to #natalieportman for her beautiful baby boy. @IMilaKunis also sent a tweet out, stating: 'Congrats to my friend #NataliePortman because she is a mom now.'

Portman and Millepied met during the production of 'Black Swan,' a role that won Portman several awards, including an Oscar. Millepied was Portman's dance partner in the film.

Millepied was born in Bordeaux, France, to a mother who was a principle dancer with the New York City Ballet. Millepied recently co-directed a French film in Paris called 'Time Doesn't Stand Still,' which Millepied states 'isn't a dance film.'

This year, at the 83rd Annual Academy Awards, Portman took home the award for Best Performance by an Actress in a Leading Role for 'Black Swan.'

The film garnered her several other awards including a Golden Globe Award for Best Performance by an Actress in a Motion Picture Drama. Portman also won a Golden Globe in 2005 for her supporting role in the film 'Closer.'

That same year, Portman was nominated for an Academy Award for Best Actress in a Supporting Role for 'Closer' but she lost to Cate Blanchett for 'Aviator.'

Portman gained recognition after her powerful performance in her first feature film, 'Leon: The Professional' (1994), in which she played a 12-year-old who lives with and assists a professional assassin after her parents are killed.

Some other notable films of Portman's career include, 'V for Vendetta' (2006) and 'Garden State' (2004, starring Zach Braff). She can be seen in her most recent film, 'Thor,' which is currently in theatres.

Natalie Portman's Acceptance Speech, Oscars 2011