Kardashian Sister Pregnant!

On the same day Kendra Wilkinson announced via Twitter that she's having a boy, fellow E! reality star Kourtney Kardashian confirmed she's pregnant with her first child.

What are they putting in the water over at E!, anyway?

Kardashian, 30, announced on Today that she's back with boyfriend Scott Disick, who is the baby's father. Fans of her family's reality show, Keeping Up With the Kardashians, saw her break up with Scott amid some alleged cheating drama last season. The baby is due in December.

american idol photosSee pictures of the Kardashian sisters!

Meantime, Kourtney and sister Khloe will debut their new reality spinoff, Kourtney and Khloe Take Miami, on Sunday.