"Kim had her baby," a hospital source told Us Weekly. "She's five weeks early. Kim got sick last night and had the baby early."
Kardashian and the newborn are both reportedly in good health. However the baby was placed in an incubator after her 1:30AM birth given Kardashian was only due on July 11, according to X17 Online.
The child's birth was induced via C-section early after Kardashian came down with an unspecified infection, according to an X17 source.
Kanye West, Kardashian's boyfriend, was present at the hospital for the birth, Us reported.
Kardashian and West had announced the reality TV star was expecting in late December. West first spilled the news during a concert in Atlantic City when Kardashian was reportedly 12 weeks pregnant, leading his girlfriend to confirm her pregnancy only days later.