X-Files star Gillian Anderson is expecting her second child with boyfriend Mark Griffiths, PEOPLE has learned exclusively.

The couple have a son, Oscar, who was born in November 2006. Anderson also has a 13-year-old daughter, Piper, from a previous marriage.

Next up, Anderson will reprise her role as Dana Scully in The X-Files: I Want to Believe, a new movie due out July 25.

aww congrats!!
http://www.people.com/people/article/0,,20203498,00.html