Lee Dong Gun's label FNC Entertainment relayed the happy news, saying, "[Jo Yoon Hee] gave birth to a beautiful girl this morning at a hospital in Gangnam. Both the mother and the child are currently healthy, while Lee Dong Gun is staying by their side." 

Just like their baby in drama 'The Gentlemen of Wolgyesu Tailor Shop', through which the two actors first met and kindled their relationship, the baby's nickname before her birth was 'Hobbang'. Congratulations!