Kim Kardashian confirms she and Kanye expecting 4th child

Kanye West, Kim Kardashian and their daughter North West attend the Balenciaga show. Photo / Getty

The latest Kardashian to keep up with is on the way, after Kim Kardashian confirmed rumours that she and Kanye West are expecting their fourth child.

The reality TV superstar appeared on this week's episode of Watch What Happens Live With Andy Cohen, revealing to the talk show host that her family's newest addition is a boy.

Cohen, who recently announced he's expecting his first child via surrogate, asked the lifestyle mogul if she was "working on another child."

Kim Kardashian and Kanye West talk from their courtside seats. Photo / Getty

"We are," Kardashian West, 38, responded, sitting alongside sisters Kourtney and Khloe.

"It's a boy, I think it's been out there," the mother of three added. "I got drunk at our Christmas Eve party and told some people. I can't remember who I told because I never get drunk."

She said the baby was due "sometime soon".

The new bub, reportedly due in May, joins daughter Chicago, who was born last January via surrogate, daughter North, 5, and their first son, three-year-old Saint.

The episode aired on the eve of baby Chicago's first birthday. Kim posted a sweet message to her youngest child on Instagram.

"Happy Birthday to my pretty girl Chi!!!! The sweetest baby in the whole world! Mommy and Daddy love you so much!" she wrote alongside a black and white photo of the smiling youngster.

View this post on Instagram

Happy Birthday to my pretty girl Chi!!!! The sweetest baby in the whole world! Mommy and Daddy love you so much!

A post shared by Kim Kardashian West (@kimkardashian) on Jan 15, 2019 at 6:16am PST

The Keeping Up With The Kardashians star has been open about her struggles with pregnancy and decision to use a surrogate, as she had previously suffered from placenta accreta — a serious condition where the placenta becomes too deeply attached to the wall of the uterus.