"Scott and I are so excited to announce that we are expecting our second child and are thrilled to be expanding the love in our family," Kardashian said in an exclusive statement to E! News Wednesday.
She first confirmed the happy news to Us Weekly, saying she is about "nine weeks along."
There is no word on the baby's gender or anticipated birth date.
Kardashian, 32, and boyfriend Scott Disick, 28, have been a couple for four years.
Their son, Mason, turns 2 next month.
Kardashian stars with her sister on the E! reality show "Kourtney & Kim Take New York."
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