VIDEO : Fans Think Kylie Jenner Announced Her Pregnancy During Khloe's Birthday

On Thursday, Khloé Kardashian celebrated her 35th birthday with family and friends. Extra TV reports that Kylie Jenner may have revealed that she's pregnant in a clip posted to Khloé?s Instagram Story. In the clip, a voice that sounds similar to Kylie?s is heard saying, ?I?m pregnant,? as the camera focused on a birthday cake. The 21-year-old shared a birthday message for her older sister the same day, saying, ?You are such a bright light in this world.