Kourtney Kardashian
Kourtney Kardashian at the 2014 Elton John AIDS Foundation Oscar Party in West Hollywood, California, on March 2. REUTERS

Just weeks after confirming her third pregnancy, Kourtney Kardashian is rumored to be wearing a fake baby bump. On the mid-Season 9 premiere of her reality show, “Keeping up with the Kardashians,” the 35-year-old admitted that she and her longtime boyfriend, Scott Disick, will be welcoming another child into the world.

“I am pregnant!” she told him, and he replied, “What? Holy s---!” So if she is pregnant, why would she be wearing a fake baby bump? According to Page Six, Kardashian will be doing a cover shoot for Fit Pregnancy this summer. “It’s for their December/January issue,” a source says. “They’re timing it with her due date, but outfitting her with a fake baby bump since she’s only a few months along.”

Kardashian and Disick already have two children together, Mason, 4, and Penelope, 23 months. Their latest addition is said to be due in December. "They don't know the gender yet," a source told Us Weekly. "They just want the baby to be healthy."

Meanwhile, as Kourtney shoots new episodes for her reality show with sister Khloe, Disick has been partying it up. Over the weekend, the 31-year-old was seen at 1Oak in the Hamptons while Kourtney celebrated Kim’s daughter’s birthday in Los Angeles. North turned 1, and Kim and Kanye celebrated with a “Kidchella” bash. The little one had a party to remember, complete with a Ferris wheel and bounce house.