The reality star and the 31-year-old basketball player, who have had an on-off relationship since 2016, already share a four-year-old daughter named True.
Kardashian has previously opened up about her potential struggles with falling pregnant.
Sky News – 14 July 2022
“We can confirm True will have a sibling who was conceived in November,” her representative said.
“Khloe is incredibly grateful to the extraordinary surrogate for such a beautiful blessing.”
The 39-year-old has also asked for “kindness and privacy” following the announcement to allow her to focus on her growing family.
Thompson and Kardashian officially split earlier this year after it was revealed that the Chicago Bulls star had fathered a child with another woman while they were together.