Pregnant Kourtney Kardashian is expecting a baby girl with longtime love Scott Disick, a source confirms to Us Weekly Credit: Paul Zimmerman/Getty Images

Two girls and a little guy! Kourtney Kardashian's kids, Mason, 4, and Penelope, 2, will soon have a baby sister to look after — multiple sources confirm to Us Weekly that the pregnant reality star is having a girl with longtime love Scott Disick.

Us exclusively broke news of Kardashian's third pregnancy back in June. She later confirmed that she was expecting during season nine of Keeping Up With the Kardashians, when she told a stunned Disick he was going to be a dad again.

No doubt the soon-to-be mom-of-three is excited to have another mini-me. She and her sisters Kim and Khloe Kardashian already have a line of kids' clothing for girls, which Kourtney helped launch earlier this year.

"I remember when I first found out I was having a boy, I became obsessed with buying boys' clothes. Then came my daughter, and I was obsessed with buying girls' clothes," she told Redbook in March. "Everything looks 10 million times cuter when it's teeny-tiny. It's just so much fun!"

Indeed, the stylish star, 35, raved in August that she was "obsessed" with the "mommy-daughter bikinis" at her Dash pop-up shop in the Hamptons. She shared a photo of the cute two-pieces — a floral bandeau top and matching bottoms for mom, and a coordinating bikini with crocheted details for her daughter — via Instagram. 

Having grown up the oldest of several girls — she also has two half-sisters, Kendall and Kylie Jenner — Kardashian knows how special the bond between sisters is. And soon Penelope will know, too.

"I am obsessed with my sisters. Being the oldest, I probably just have that in me," the pregnant star told Redbook. "But I also think I am the youngest sometimes. We all have moments when we are the maternal one of the group."