Kourtney Kardashian Reveals She's Having a Boy!

Credit: Frazer Harrison/KK/WireImage.com

Start painting the nursery blue!

Kourtney Kardashian and Scott Disick are having a boy.

"Scott and I are thrilled to add a little boy to the bunch!" the mom-to-be, 30, tells E! News. "A boy is definitely needed in this family.

Guess the celeb baby bump!

When Usmagazine.com chatted with Kourtney earlier this week, she said she still wasn't sure about the baby's sex.

"I think I want to know soon just for planning purposes," she said. "I ordered a few things, some neutral stuff, but I want to order other stuff. I'm in nursery planning mode."

Look at these babies who resemble star tykes

Surely, sister Khloe is thrilled with the news. She told Us she was miffed because it was difficult to buy baby gifts when she didn't know the baby's sex. "We can only buy neutrals," she told Us. "When we know if it's a boy or a girl, I can buy more cute things."

See Khloe's wedding album

Kourtney announced her pregnancy in August. She initially kept the identity of the father under wraps, but later revealed that it was Disick, her on-and-off beau.

With the little one due in December, are there any plans to wed? "We'll see," she has said.

For now, Disick told Us they have their hands full.

"We're home every night looking at baby books and baby magazines," he told Us. "I just want to stay home with her, enjoy her company, look at her stomach and be with her."