Khloé Kardashian is expecting a second child with Tristan Thompson

Kim Kardashian gives her daughter North a special birthday 0:45

(CNN) --

The Kardashian family continues to grow.

Khloé Kardashian and ex-boyfriend Tristan Thompson will welcome a second child via surrogate mother, a representative for the Kardashians told CNN.

The former couple have a 4-year-old daughter, True.

“We can confirm that True will have a brother who was conceived in November.

Khloe is incredibly grateful to the extraordinary surrogate mother for such a beautiful blessing," the rep said.

"We would like to ask for kindness and privacy so Khloe can focus on her family."

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In recent years, Kardashian has been open about her desire to grow her family.

Her efforts to conceive a second child through in vitro fertilization (IVF) and fertility assistance were documented on the show "Keeping Up With the Kardashians."

While Kardashian and Thompson have had a tumultuous romantic relationship that ended in December, they communicate as co-parents.

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Thompson, a forward for the Chicago Bulls, is also the father of two young children from other relationships.

khloe kardashian