The Kardashian clan just keeps on getting bigger. According to new reports, Kourtney Kardashian and her longtime boyfriend Scott Disick are expecting baby number three. The couple is already parents to Mason, 4, and Penelope, 23 months.

US Weekly claims that several sources confirmed that the 35-year-old reality star is indeed pregnant.

"She is only a few months along," one source told the magazine.

A guest at the Trump SoHo hotel in New York City, where Kardashian stayed after returning from Florence for Kim Kardashian's wedding, told US that the mother of two already had a pregnancy glow.  

"Kourtney looked really pretty. She had a nice flush on her cheeks," the guest said.

Reportedly another source told the magazine that while Kardashian and Disick were out with Khloe Kardashian and her rumored boyfriend French Montana, the expectant mom only sipped on ginger ale while everyone else had alcohol.

"It was planned," a source said about the pregnancy. "[Kourtney] wants to have a handful of kids."

In fact, she did joke about having a big family in a 2012 episode of "Keeping Up With the Kardashians" where she announced that she wasn't going to use birth control anymore.

"I need to see what it's like when I have two, but [having kids] is what life is about," she said at the time. "I'm not going on the pill. I don't believe in it anymore!"

According to US Weekly, Disick and Kardashian will welcome their new baby in December.

"They don't know the gender yet," another source told US. "They just want the baby to be healthy."

The reality star might wait to announce her pregnancy on her and Khloe's "Keeping Up With the Kardashians" spinoff show, "Kourtney and Khloe Take the Hamptons." The show will follow the sisters as they relocate their SoHo DASH store to the Hamptons.

Filming is expected to begin this summer and the show will air on E! in the fall.