The 47-year-old model was married for three years to Akira, a Japanese ex-husband from J-Pop group Exile. She announced the news via social media, with a photo showing the interlocked fingers of her three children.
Surprised, she didn't tell anyone she was pregnant.
Lin wrote, "Thanks for coming into our families," Our little angel is here. In the new year, I want to share my happiness and gratitude with all my family and friends. Here's to a healthy, happy new year full of love and hope!
Akira also shared the following message on social media: Thank you for joining our family. As long as we keep our eyes open for the possibility, our futures are bright. We wish you all a happy New Year and new Beginnings filled with love and gratitude!
Although the couple has not yet revealed the gender, Taiwanese media outlets reported that the child was a boy, as it was rumored to have been born in America.