updated 12/11/2013 AT 6:00 AM ET
•originally published 12/11/2013 AT 7:20 AM ET
After revealing her post-baby body in a sexy Instagram selfie in mid-October, Kim Kardashian has been wowing with figure-flaunting fashions ever since.
With the help of “a trainer on tour with she and Kanye and a chef to keep her meals carb free,” Kardashian, 33, has managed to slim down even more, says an insider.
“With the exception of some cheat days, because she is realistic now, she sticks with it!”
When she’s not busy with new mom duties to North, 6 months, “Kim is working out almost every day,” explains the insider. “It’s usually running and weight training.”
Acknowledging that losing her baby weight was one of the hardest things she’s ever done, Kardashian, says the insider, knows that keeping her fit frame will require constant work.
“It’s hard, but she sticks with it pretty much all the time,” says the source. “She’s so happy. Life is good.”