Kim Kardashian Celebrates Kourtney Kardashian's 44-Pound Bodyweight Reduction : "She Is an Inspiration to Me!"

Kim Kardashian isn't due to give birth for several months, but when she does, she'll be hunting to sister Kourtney for additional than just parenting recommendations.

The pregnant actuality starlet, who is expecting her first youngster with boyfriend Kanye West, took to her website on Jan. 3 to marvel at Kourtney's incredible publish - infant physique on the cover of Us Weekly.

"How extraordinary does Kourt seem !?" Kardashian, 32, wrote of her sister's unretouched bikini pics. "She has lost 44 lbs in six months since providing birth to Penelope and appears superior than ever. She is an inspiration to me! While we had been in Miami we would generally function out with each other and maintain each oth er motivated and I am so proud of her!"

Kourtney, for her aspect, advised Us Weekly's West Coast Bureau Chief Rebecca Bienstock that she could not have completed it with out her younger sis. "If she was not scheduling the workouts, I in all probability would not have been as motivated," she explained. "If one of us isn't in the mood, we push just about every other."

Now a lean 106 pounds, the mom-of-two -- to Penelope, 6 months, and Mason, 3, with partner Scott Disick -- functions out often with celeb trainer Tracy Anderson, who is also assisting Kourtney's twelve -weeks-pregnant sister keep match.

"Tracy Anderson is keeping me in form !" the 1st -time mom-to-be wrote on Jan. 3. "She is helping me make the changes vital to hold me feeling happy, balanced and most importantly make a work out program that is protected for the infant . It truly is really crucial for me to have a health and fitness routine that functions for my physique and my schedule and I am truly pleased with the exercise approach Tracy is doing work with me on."

For far more information on how Kourtney Kardashian received her post - infant entire body back -- plus her ideas on marriage and having a third child -- pick up the new situation of Us Weekly, on stands Friday!