The ex-girlfriend of Kim Hyun Joong, identified only as Choi, had her baby on September 10, two days before her due date.
According to the Korean media outlet Chosun Ilbo, the baby was born at a hospital in Seoul.
Her legal team released a statement.
"Currently mother and baby are healthy and receiving postnatal care."
The next step will be a paternity test to determine if Kim Hyun Joong is the father.
A spokesperson for Kim Hyun Joong's agency Key East Entertainment said that Choi's lawyer informed them about the birth but they have no way of knowing if Kim knows since he is serving his two year mandatory military duty.
Kim was due to have a day out on leave after serving the first 100 days of his military duty. He began serving on June 12. But he cancelled his leave citing personal reasons. Fans have speculated that his cancellation had something to do with the birth and wanting to avoid public scrutiny.
Choi's lawyers said that she has not been in touch with him.
"I don't believe the two have communicated since last May. I am not sure whether he knows about the birth."
Key East representatives said that if a paternity test proves that Kim is the father of Choi's child he plans to take responsibility.
"The stance hasn't changed."
Although Kim plans to support the child if the paternity test confirms he is the father, the lawsuits by both Choi and Kim will continue.
Choi's lawsuit concerns an incident that happened in 2014. That year Choi filed four charges of physical assault against Kim, the star of "Inspiring Generation." She eventually dropped three of those charges after receiving a public apology and a settlement of $500,000. Part of that settlement was her agreeing to never discuss the incident again. Kim also paid an additional fine when the remaining charge of assault went to court. He said they only ever had the one fight.
The couple reunited late in 2014, vacationed together, and broke up. In January Choi informed Kim that she was pregnant. Then she sued him for $1.6 million for the psychological damage she claimed she suffered after she miscarried from the 2014 assault incident.
Kim's legal team counter-sued for $1 million claiming that because she couldn't provide evidence that she was ever pregnant, her charges amounted to defamation of character. They also said that she broke the terms of the original settlement, which included her silence on the subject.