Kim Kardashian's older sister Kourtney, 30, is expecting her first child. People magazine reports that Kourtney was surprised. "We were in the Everglades and I kept feeling nauseous and sick," the Keeping Up with the Kardashians star told E! "I just kept thinking something wasn't right... I went to the doctor and he confirmed the news. I was just so shocked." No word on who the father is yet, as Kourtney's on-again, off-again relationship with Scott Disick reportedly ended in January, although they've since been spotted together. The baby is due around Christmas.