Socialite Kim Kardashian's sister Kourtney Kardashian is reportedly pregnant with her first child. The 'Keeping Up with the Kardashians' star says that her baby is due right around Christmas time, reports E!online. But she refused to reveal the father of the baby.

Kourtney Kardashian tells E! online, "We were in the Everglades and I kept feeling nauseous and sick. I just kept thinking something wasn't right. I"ve never missed a period in my (life). I took like 20 tests. I went to the doctor and he confirmed the news. I was just so shocked." She also adds that her first baby is due right around Christmas time. her mother Kris Jenner is really excited.

E! Online broke the big pregnancy news, just days before Kourtney's new summer spin-off show, 'Kourtney and Khloe Take Miami,' debuts on Sunday. However, Kourtney refused to reveal father of her first baby. She was previously linked to boyfriend Scott Disick, who is her on-again-off-again boyfriend.

Even though sources reported taht they had broken up earlier this year, they were spotted hanging out in the Hamptons in July. The speculations are also being made about bisexual friend Jackie with whom she shared a kiss during the shooting of 'Kourtney and Khloe Take Miami'.