Kim Kardashian has apparently revealed she is "waist training" by lacing herself into a tight corset.

The US reality star has previously said she was struggling to lose the last bit of baby weight after welcoming daughter North in June 2013.

And it seems she has found the solution as she posted a selfie on Instagram which showed her waist cinched into a black and purple corset.

To make sure people don't think her image was altered, Kim added the hashtag: "No Photoshop necessary."

Her other hashtags said "hourglass", "waist training" and "", which sells the waist-shaping device the star was wearing.

Meanwhile, it has been reported that the 33-year-old has managed to shed seven pounds on a low-carb diet.

"She feels like she's reached her goal weight now," a source told Us Weekly. "You can tell she slimmed down."