Jenna Fischer gives birth to boy

Jenna Fischer has given birth to a baby boy.

The Office star and her husband Lee Kirk became first-time parents to Weston Lee on Spetember 24, her representative has confirmed to People.com.

The spokesperson says: "Mum and baby are doing great."

Fischer, whose characted Pam in the show has a daughter and is expecting a son with TV husband Jim Halpert, first revealed she was pregnant in May.

In July, she told Jay Leno on The Tonight Show she was having a boy.

Fischer and Kirk were engaged in 2009 while both were holidaying in Europe, they got married in July 2010, with Survivor's Jeff Probst officiating the ceremony.