Kardashian's efforts began in October when she posted an Instagram photo of herself showing off her curves in a one-piece bathing suit. The 33-year-old reality star said the picture was a "big middle finger to the world" for calling her fat when she was pregnant with her daughter.
Us Weekly's article is titled "My Body is Back! No Gimmicks, No Surgery!" and it showcases how "Kim slams the fat bullies and gets her sweet revenge" in addition to sharing the details behind her wight loss.
"Kim feels confident again," a source close to Kanye West's fiancée told Us Weekly. "She worked really hard and is so motivated to stay fit."
Fellow celebrity mom Britney Spears supported Kardashian's claim that she was fat shamed during her pregnancy and spoke up for the first-time mom during an interview for the January 2014 issue of In Style magazine.
"I see Kim and what she went through when she was pregnant -- the tabloids were so mean to her because she was big. At one point in the show she was upset and said something like, 'I would be lying if I said that the criticism from the paparazzi while I've been pregnant hasn't taken a toll on me.' And I was like, 'Bless her heart,' because I remember that time," she said.
The new issue of Us Weekly hits stands Friday.