Kim Kardashian flaunts her toned abs in a black crop top and skintight leggings days after sparking concern over her very slender frame

Kim Kardashian showed off her toned abs in a black crop top days after worrying about her very slim frame.

The reality star, 42, donned the sports top and matching form-fitting leggings to pose for a gorgeous gym selfie with her personal trainer Senada Greca – who she wished a happy 41st birthday.

Once the star, Kim pouted at the camera and showed off a peace sign as she showed off her gym-trained physique.

However, her smiley snap comes just days after she made her fans concerned about her shrinking body after she posted a photo showing off her new pair of jeans.

Kim shared a photo from her private jet wearing a white crop top and distressed jeans that had been lovingly customized by her four children, North, 10, Saint, seven, Chicago, five, and Psalm, four.

The doting mom shared close-ups of the blank inked drawings her kids made on the garment.

But concerned fans were much more concerned about Kim’s slim figure, with the jeans appearing to fall off her hips.

Following the comments, followers were quick to comment on Kim’s slimmed-down look.

One person wrote, “The waist…not realistic for an average woman.”

While another said, “We get it Kim, you’re super slim again.”

A third concerned fan shared, “How do you get a shrinking waist in every post?” You will soon disappear! How do you manage to never eat? A serious question, because I know many people wonder that.’

“That’s a preteen’s waist,” a fourth follower commented.

“You look hungry,” a fifth person wrote.

With one more addition: ‘Too skinny Kim. What you’re doing is dangerous.’