Sun is giving fans the first look at her third child, Yu Jin!
On February 4, the former Wonder Girls member, who now resides in Canada with her husband and kids, took to her personal Instagram account to share the good news with her fans, writing: "On January 30, after only 40 weeks of pregnancy, I was able to meet Yu Jin, the third gift given to us."
The caption accompanies a photo of the newborn at only five days old, wearing an adorable rabbit hat and bundled up in a soft pink blanket. Through the hashtags, Sun revealed that not only is the baby named Yu Jin, but she also has an English name, Madison.
Meanwhile, Sun's agency Polaris Entertainment announced that she had given birth back on January 30.
Check out the adorable photo of Yu Jin below!