A US magazine has reported: "Kim wants to be thinner than her pre-baby body and is willing to do anything to get there."
The Reality TV star is said to be working out for three hours every day and eats a strict Atkins diet of high protein.
She is said to have shed 70 lbs since giving birth to daughter North last summer, and this week showed off her impressive figure while attending Paris Haute Couture Fashion week with Kanye West, whom she got engaged to on her 33rd birthday in October,
Lat night she returned to the US where she appeared on the Jimmy Kimmel show in a Dior dress, she had cut in half to reveal her midriff.
"We will be getting married, this summer hopefully, in Paris," she told US talk show host Jimmy Kimmel.
"It's our second home. We spend so much time there, we have an apartment there. I'm not telling where or the date but it's definitely Paris."
The couple have been in Paris for the couture fashion shows of late and sparked claims they were hoping to exchange vows at the Palace of Versailles. The establishment was quick to shoot down the speculation, tweeting that the wedding wouldn't be happening at the venue.
Kim has seconded that, adding that whatever they decide on her fiancé will be heavily involved.
"We took a tour because we've never been there before. We were just having a private tour," she insisted.
"Kanye really cares and he's really passionate about it. He knows what he wants and he's very specific about it. It makes my job 100 per cent easier
"He'll take care of the music, I'll take care of seating chart so we'll make it easier for each other."
Kim also touched on the couple's home life. Since their daughter North was born last June they have been living with Kim's mother Kris Jenner and some of the rest of her family. While they are grateful for the support of the Kardashian clan, sometimes it gets a bit too much for the rapper.
"We spent New Year's in a condo with my mother and Kanye said, 'Can we just have three days to ourselves without your family?' so we went to Paris," she explained.
"It was too far for North to come so my mom and my sisters all looked after her. He's moved in with me, my mom, two little sisters so that's why we needed to get away. We live with my mom because our house is being worked on right now."
Meanwhile, proud mum Kim hasn't held back from posting snaps of her daughter, North or 'Nori' for short.
The reality star took to Instagram this evening to share a cute snap of her niece Penelope holding his cousin North for a photo.