The reality TV star was warned another pregnancy could kill her.
Kim Kardashian and Kanye West will add a third child to their family in January (18), via a surrogate, according to reports.
The baby will join the couple's daughter North and son Saint.
"The entire family is over the moon," a source tells People. "Kim had been looking for a surrogate for months until recently when she found the perfect candidate.
"Given her health scares in the past, Kim felt the need to hire a surrogacy agency that helped serve as the liaison in finding a healthy woman who would be a great surrogate option for her and Kanye. Both of them have been super involved in the process. They want everything to be perfect and for the baby to be extremely healthy."
Previous reports suggested a San Diego, California mother in her late 20s was three months pregnant with the couple's third child in July (17), but Kim and Kanye refused to comment on the speculation.
The unnamed woman was described as an experienced surrogate, who has appeared in a promotional video about the process.
Kardashian has reportedly chosen not to carry her third child after suffering placenta accreta, a potentially life-threatening condition, while she was expecting daughter North and son Saint. She was warned by doctors following her last pregnancy that another could be life-threatening.
Kim's mum Kris Jenner has offered to serve as her surrogate and her sister Khloe has also visited a doctor to see if she was a viable candidate.
The couple still hasn't commented on the surrogate news or reports the baby is due at the beginning of next year.