The 34-year-old star star welcomed Saint into the world on December 5 and has admitted she is determined to lose the 60lbs she gained while she was pregnant with her and husband Kanye West's second child, reported Female First.
Speaking to her step-father Caitlyn Jenner on a live stream on her app and website, she said, "This feels like a really hard recovery but we will get through it. Everyone does it."
Kardashian, who also has two-year-old daughter North with the rapper, revealed she weighed just over 9st when she fell pregnant with Saint and went up to 13st 7lb towards the end of her pregnancy.
Before Saint's birth Kardashian had said she wanted to take her time ditching her baby weight.