It seems Kylie Jenner is trying to topple sister Kim Kardashian as the NO.1 sex symbol in her family.

The 17-year-old took to her Instagram account to share two sexy bikini pictures. All the two photos are similar to other bikini poses by big sister Kim.

Also, the images make her curves very noticeable igniting rumours that the youngest of the Kardashian/Jenner siblings has undergone plastic surgery.

Flip to the next pages for the photos…