Kris Jenner has compared her daughters' ability to have babies to a tap that won't turn off.

Kris Jenner

Kris Jenner

The matriarch and manager of the famous family gives an emotional speech in the 'Keeping Up With The Kardashians' holiday special, in which she gives thanks for all her grandchildren.

Kris tells her family tearfully: "I used to pray that one of you guys would have a baby and now it's like a faucet that we turned on and won't turn off. The fact hat I have all these grandchildren, it's been the most amazing journey to watch your kids because it's truly the meaning of just life."

Kris, 62, is already grandmother to her daughter Kourtney Kardashian's three kids with ex-partner Scott Disick, Mason, seven, Penelope, five, and two-year-old Reign, her son Rob's 12-month-old daughter Dream, who he has with former fiance Blac Chyna, and Kim Kardashian West and Kanye West's two kids, North, four, and Saint, 23 months.

Kim and Kanye are expecting their third child via a surrogate, while Kylie Jenner and Khloe Kardashian are both reported to be pregnant. But the reports remain unconfirmed.

In the scene from 'A Very Kardashian Holiday', which is about to air in the US, the family have a big dinner where they all share what they are thankful for.

Kim said: "I don't know if I'm thankful for the calm before the storm next year with the new baby, and I'm thankful that we have family here."

Khloe added: "I think I'm thankful for having so many generations here. It's so cool."

And Kylie revealed: "I'm thankful for my mom because I don't know what I would do without you. You're like my favourite person on the planet. You really are, I hold you in high regards."

The 'Keeping Up With the Kardashians' stars have stayed tight-lipped on the subject of Kylie and Khloe's rumoured pregnancies and 37-year-old Kim recently opted to down a sardine smoothie rather than confirm the news.

During a game of Spill Your Guts or Fill Your Guts, talk show host James, Corden said: "I'm going to give you a sardine smoothie.

"You love a smoothie. Just think of it as a green juice just with sardines in it. Kim, there have been lots of rumours about your sisters, Khloe and Kylie, being pregnant. Are they true? Yes or no?"

But Kim made the sacrifice and simply picked up the liquid with foam on top and took a sip, although she swiftly spat it out.

She said: "F**k! The aftertaste. I have to go to dinner after this. So f***ing disgusting."

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