Kylie Jenner and Khloe Kardashian joked about having "so many babies" in a new video.

Jenner, 20, and Kardashian, 33, appeared together in a Kylie Cosmetics promo Tuesday amid rumors they're pregnant and expecting with Travis Scott and Tristan Thompson, respectively.

The video shows the "Keeping Up with the Kardashians" stars apply makeup from the Kylie Cosmetics "In Love with the KoKo" collection, including one of their matte liquid lipsticks.

"We created them," Kardashian said of the products. "It's our baby together. We have eight!"

"We have so many babies," Jenner added. "Who knew?"

TMZ reported Sept. 22 that Jenner and Scott are expecting their first child. Sources told People the reality star is "thrilled" to be expecting a daughter in February.

"It is an unexpected but completely amazing turn of events that she could not be more excited or thrilled about," an insider said.

"Everyone is overjoyed for her. This is the happiest she's ever been."

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People confirmed Sept. 26 that Kardashian is also expecting with Thompson.

"Yes, Khloe and Tristan are expecting and they are absolutely thrilled," a source said.

In addition, Jenner and Kardashian's sister Kim Kardashian is expecting her third child, via surrogate, with husband Kanye West.

"Keeping Up with the Kardashians" is in its 14th season and airs Sundays on E!.