OK! Exclusive: Courtney Thorne Smith Delivers!

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It's babypalooza!

According to Jim star Courtney Thorne Smith delivered a 6 lb. 13 oz. son in Los Angeles today, whom she named Jacob ‘Jake’ Emerson Fishman, OK! has learned exclusively.

Jake is the first child for Courtney and her husband of one year, Santa Monica media owner Roger Fishman.

Despite being nearly two weeks past her original due date, the actress insisted on giving birth the natural way rather than being induced. The 40-year-old entered the hospital last night and — after nearly 12 hours of labor — delivered her baby boy this morning.

Jake was a delivery surprise for the couple as they insisted on not knowing the sex beforehand, an insider tells OK!.

“They were surprised and, of course, delighted when Jake arrived," the source says. "She had selected the name Maya in the event she was greeted by a girl baby instead of a boy. Courtney’s son’s middle name Emerson is also her father’s name.

“She is happily breastfeeding at the moment and bounced back so fast from her delivery ordeal that she has been given the ‘all clear’ to leave the hospital tonight if she wants.

“Everything happened so quickly that Courtney’s mom — who had flown in for the birth weeks ago — had already flown back home and wasn’t able to arrive in time.”