Jenna Fischer of 'The Office' has a new baby son

Jenna Fischer of "The Office" has a new baby boy -- and it turns out she's had him for a while now.

The actress and husband Lee Kirk, a writer, welcomed son Weston Lee on Sept. 24, her rep told People exclusively. This is a first child for the couple, who were married in July 2010.

After what Fischer had described as an easy pregnancy, "Mom and baby are doing great," the rep said Monday. The baby on board was announced in May, with Fischer revealing the "It's a boy" part in a chat with Jay Leno in July.

On the eighth season of "The Office," which premiered last month just days before baby Weston did, Fisher's Pam is expecting her second child with on-screen hubby Jim, played by John Krasinski.

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-- Christie D'Zurilla
Twitter.com/dzurillaville

Photo: Jenna Fischer and Lee Kirk in February. Credit: Frederick M. Brown / Getty Images

Jenna Fischer saves it for Jay Leno: She's having a boy

Jenna Fischer is expecting a boy, she revealed Monday on "The Tonight Show with Jay Leno."

"The Office" actress told Leno she'd been asked very recently on the red carpet whether the baby was a boy or a girl, but refused to answer at the time, allegedly because she wanted to tell Leno first.

So, the host observed, "Like a lot of girls, you were saving yourself for Jay!"

Oh my. So, yeah, um, the baby is due in late September. What were we just talking about?

Fischer, whose movie, "A Little Help," opens Friday, took the opportunity to address "the nation" on a few issues important to pregnant women, including cleaning up around the sink in the public restroom, agreeing to take a seat rather than doing the "hover and tinkle," and the nature of true hunger.

If a pregnant woman says she's hungry, Fischer said, don't ask her what she'd like to eat: "You should just throw food at her."

"Don't offer me a salad with vinaigrette dressing," she explained. "I want spaghetti bolognese. I want it immediately. Or I'm going to eat your foot.

"That's kind of how it goes."

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-- Christie D'Zurilla
Twitter.com/dzurillaville