However, the 17-year-old star quickly changed her mind about the admission and edited the caption to simply read: "behind the scenes."
Kylie's decision to be open about her figure comes just a couple of weeks after Selena Gomez fell victim to online bullies who taunted her about her alleged weight gain after she posted a picture of herself in a similar revealing swimsuit online.
The 22-year-old beauty was quick to slam her critics and hit back at one "disgusting" Instagram user for urging her to "work out" and "please stop eating junk food."
The Come & Get It hitmaker responded: "IM IN the business and I could care less about what 'they' or you said I should look like. I don't need to do anything other than love myself, take care of my work, fans, family and friends...And I do work out. It's not your place to tell anyone what they should or should not do."
- Bang! Showbiz