Celebrity magazines have a field day with the life of Kim Kardashian, whose fashion sense and physical attributes are highly publicized. Kim Kardashian’s weight is also a popular topic of discussion, as she has repeated admitted to wanting a more toned body.
In 2009, Kardashian reportedly went from a size 6 to a size 2 as she prepared for her fitness DVD titled, “Fit in Your Jeans by Friday.” She coupled an intense workout routine with a macrobiotic diet, which helped shed pounds and tone her body. Her exercise and eating habits have fluctuated over the years, including a stint as spokeswoman for Trim Spa (a weight loss supplement).
As of February 2010, it was reported that Kim Kardashian weighs 120 pounds on a 5’2″ frame [1]. Kardashian also wrote in her blog in 2008 that she weighed 120 pounds [2].
Source
[1] http://bricksandstonesgossip.com/2010/02/17/how-much-do-celebrities-weigh
[2] http://www.theinsider.com/news/1014808_Kim_Kardashian_reveals_her_weight