Kylie Jenner has been accused of editing a video of her ab muscles, just two months after giving birth.
The 24-year-old flaunted her flat tummy on Instagram, noting that she was returning to her pre-baby body.
"My abs over here trying to make a comeback finally," she wrote.
Cosmetics boss Kylie and her partner Travis Scott, 30, welcomed their son in February.
Wearing a log sleeve black crop top and baggy jogging bottoms, she admired herself in the mirror, pulling down her trousers down slightly.
But fans struggled to believe that the star's video was genuine, with many claiming it would be impossible for her to tone up so quickly.
One person wrote: "Kylie just posted this… are we really supposed to believe this is a recent video of hers?"
Some thought that it could have been a throwback video, with one saying: "It probably is. It’s the same phone case from all her other pictures."
Another said: "Did she not get the memo that snap backs are tired."
A third added: "As a mom of 3 I call BULLS**T."
While another asked: "Is it eve humanly possible to get back your abs just two months after giving birth?"
A fifth said: "If this were real, she wouldn't have worn Baggy black jeans and an oversized jacket to Disneyland either....
"Not sure who she thinks she's fooling but she sh**s me because she got so much praise recently for sharing her post partum stomach photo and now this s**t is being shared and the young mothers feel like c*** because of it."
However, last month Kylie was praised for sharing a photo of her stretch marks as her baby's feet resting on her tummy.
One fan wrote: "As a mommy, I love the rawness of this picture. The stretched skin, the postpartum tummy, the little extra weight. I just love it."
Another added: "I love that she posted this. Normalizing normal bodies."
"For women who have such big platforms, this is the type of content we need from them! I love this so much!" a third posted.
Another fan declared: "Honestly, this is probably the most beautiful picture she's ever posted."
She recently shared her postpartum struggles, and said that she had found being a new mum harder with her son than she did with Stormi.
She said: "Postpartum has not been easy. It's very hard. This experience for me personally has been a little harder than with my daughter.
"It's not easy mentally, physically, spiritually. It's just been crazy. I didn't want to get back to life without saying that because I think we can look on the internet... and it could look a lot easier for other people, but it hasn't been easy for me..."
Kylie revealed that she is "feeling better" and told other moms that it's "okay not to be okay."
She told fans that her son's name was Wolf, before then deciding that the name didn't suit him and that they planned on changing it.
She and Travis are still yet to share their son's new name.