Kim Kardashian has said her sister Kourtney is “having a hard time” as she piles on the pregnancy pounds.

Kourtney, 30, is expecting a baby boy with boyfriend Scott Disick in December, and she has now gained 26 pounds during her pregnancy.

Her sister Kim, 28, said: “Kourtney is going crazy. She feels so big right now. She’s just ready to have the baby.”

She added: “I think once you get to that final month, you are just so anxious to have the baby.”

Kim and their younger sister Khloe, 25, are both dieting with the QuickTrim product and said Kourtney is jealous of their slim figures.

Kim said: “She is anxious to get on the same plan as us. She sees a definite difference in weight loss from us. I feel like I am in the best shape of my life right now.”