Kim Kardashian and Kanye West will welcome their third child into the world in January

North and Saint are about to get a little sibling.

It's been revealed Kim Kardashian and Kanye West's surrogate is due to give birth at the end of January 2018.

The couple hired a surrogate to carry a baby for them because of the extremely serious health problems the reality star experienced with her previous pregnancies.

It was previously reported the couple hired an unnamed woman through an agency to carry their baby for $45,000, as long as the surrogate refrained from smoking, drinking and taking drugs during the pregnancy, doesn't go in hot tubs or saunas, handles or changes any cat litter, applies hair dye, drinks more than one caffeinated drink per day or eats raw fish.

Kim has admitted she "misses" having a baby in the family now her youngest child is nearly two years old.

A source claimed: "After having Saint, Kim was told she couldn't carry another baby - that it would be too dangerous - and she was okay with that. She was content with two. But even after having Saint and knowing everything, Kanye was already talking about having more kids. He would want a family of five or six if it was up to him.

"Kim was never going to let herself get pregnant again. But she thinks her kids have grown up too fast and misses having a baby in the family. Things have been good for the past few months, and she started agreeing with him [about having another child]."