The mother of two has been very vocal about getting back to her pre-pregnancy body. Last month, she revealed she had achieved her goal weight of 135 pounds, crediting her Atkins diet for the impressive accomplishment.
Kim also used the Atkins program after giving birth to her daughter, North, who turns 3 on June 15. "It works for me!" she tweeted at the time. "So much variety on #Atkins40 and Harvest Trail Bars = YUM."
On Thursday, Kim took to Instagram to tease a "#secretproject." While she didn't give too much insight on what the gig entails, she definitely got her fans attention, as the accompanied picture was one of her bare booty.