Taiwanese actress Sonia Sui announced the birth of her baby son, Olie, on December 18.
The gender was kept quiet prior to the birth. Born at 3.7kg, Olie adds to the tally to make it three children. Sonia revealed she had a tougher time delivering Olie compared to the other two kids.
She announced that the family will now be moving to a bigger accommodation.
Tony Chia and Sonia have been married for only three years, and have averaged one child per year.
Earlier in the year, Sonia announced on a talk show that family comes first, although she hasn't completely given up on her acting career.