UPDATE (9/6/17, 7:30 p.m. ET): According to TMZ, the new baby is a girl. If true, it will be Kim and Kanye's second daughter, following their oldest child, 4-year-old North West.
TMZ reports that the Kardashian-West due date is January 2018.
The couple's third child will join the ever-growing family, including big sister North, 4, and Saint, 21 months. Kimye were married in May 2014.
KKW has been vocal about her pregnancy complications in the past and also discussed finding a surrogate on her show, Keeping Up With The Kardashians. According to People's source, a surrogate was the best decision for Baby No. 3.
"After talking to Kanye, I think that I always knew that surrogacy was an option, but I didn't think it was that realistic of an option. Now I feel like that's my reality," Kardashian-West explained on the show. "I feel like surrogacy really is the only other option for me."