Kylie Jenner is claiming she’s gained 15 pounds since last year. In a new throwback Instagram photo, Jenner claims to have put on 15 pounds since the time that the picture was taken. The photo was actually taken in April 2014, so Jenner is claiming to have gained 15 pounds in 11 months. Jenner has always had an amazing body, one that many girls envy. So, she might be wrong with her latest Instagram caption.