The 35-year-old reality star and long-term partner Scott Disick, 31, are already parents to son Mason, four, and two-year-old daughter Penelope Scotland.
PICTURE: KIM KARDASHIAN AN APPARENT DIG AT BEYONCE AND JAY Z WITH 'ELEVATOR KISS' POST
Despite her amazing figure, Kourtney insists she never denies herself anything that her body is craving. She admitted that she is lusting after cheese and pickle sandwiches right now and always allows herself sweet treats.
Speaking to a US magazine, Kourtney said: "I try to eat pretty healthily, but I think it's fun and important to listen to your cravings.
READ: KHLOE KARDASHIAN HITS OUT AT LAMAR ODOM FOR PLAYING 'MIND GAMES' WITH HER
"I develop a think for Nilla Wafer cookies every time [I'm pregnant]. I have no idea why! I've also been into cheese and pickle sandwiches. Everyone thinks I'm gross when I order them."
Kourtney said that when it comes to her children, she tries to feed them a strictly organic and healthy diet but she does make some allowances.
She continued: "We definitely make exceptions, like if we're at Disneyland. But we eat organic where we can, and I try to keep healthy food and snacks at home, where I have the most rules and restrictions.
READ: ROB KARDASHIAN GUSHES OVER NIECE NORTH WEST: "SHE'S SO PRETTY!"
"I saw my mom making meals for my kids, and I said, 'This is the cheese you use? This is the butter?' But i guess that's just part of going to Grandma's house."