0709_kardashiansFor Kourtney Kardashian, labor was a family affair.

The "Keeping Up with the Kardashians" star gave birth to daughter Penelope Scotland Disick yesterday in L.A. -- and it was a full delivery room!

Sources close to the reality star-filled family tell toofab Kourt's babydaddy Scott Disick, sisters Kim, Khloe, Kendall and Kylie and mom Kris Jenner were all there when she gave birth.

We're told the delivery was "very easy" and Kourtney and her newborn are already home from the hospital.

While Kris Jenner says the new parents named the girl "Penelope" because they just liked the name, we're told her middle name is a reference to her father, Scott.

Congratulations to the entire Kardashian clan on their newest member!

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