Break out the pink balloons!
Kourtney Kardashian welcomed a baby girl, Penelope Scotland Disick, in Los Angeles on Sunday, Us Weekly has confirmed. Kardashian's new arrival joins her 2-year-old son, Mason, with boyfriend of five years Scott Disick, 29. A source tells Us: "The entire Kardashian/Jenner clan was at the hospital and everyone was super excited!"
Confirming her second pregnancy exclusively to Us Weekly in November 2011, Kardashian, 33, and Disick enjoyed a babymoon in Mexico last February, where the expectant star showed off her bump in sexy bikinis and hung poolside with her boyfriend and their little boy.
In May, she was feted at baby shower hosted by her mother, Kris Jenner, and attended by 70 guests, including sisters Kim and Khloe, and their significant others, Kanye West and Lamar Odom.
"I am excited to have a girl, to have a new experience," the new mom gushed on an episode of the family's E! reality hit Keeping Up With the Kardashians. "I'm really excited for Mason to not have to compete with a little brother!"
Little Mason is equally as excited to have a baby sister. "Babies are his new obsession!" Kourtney explains.
He's not alone. Kourtney's younger sister, Khloe, 27, couldn't be more thrilled to have a new niece to spoil. "I have bought Kourt's daughter so many tutus," Khloe has said. "All I want to do is dip my niece in glitter and put a tutu on her!"
This article originally appeared on Usmagazine.com: Kourtney Kardashian Gives Birth to Baby Girl Penelope Scotland Disick!