Song Hye Kyo
South Korean star, Song Hye Kyo, is the brand ambassador for cosmetic brand Laneige. Facebook

The popular Song-Song couple of the "Descendants of the Sun" is being a bit cryptic in their respective Instagram posts. Just a day back, Song Joong-ki posted a picture of him talking to a woman, whose back is turned to the camera. The caption-less picture on his instagram account raised a lot of questions and curiosity among the fans but nothing much is known about the mysterious man on the picture.

Now, Song Hye Kyo posted a picture of herself with a young girl. Unlike her last post where she looked really sad, here she is in all smiles. The picture became viral and got more than 400,000 likes in one day. It also raised a lot of questions and fans are very curious to know who the young girl is in the actress' recent post.

Despite several questions from the fans just like Song Joong-ki, Song Hye Kyo too did not reply to their queries. Some fans even speculated that the young girl with the actress can be her daughter. Some inquired, "Is that her daughter?" while some asked, "Who's that little girl?". There were about more than 3,000 comments that Song Hye Kyo got on that post of hers.

Unlike Song Joong-ki, Song Hye Kyo captioned the picture saying, "With my angel" which was interpreted by some fans to be her own child.

Some fans even went on to ask, "Your children with song jong ki oppa(?)" Another fan suggested, "Married With song joong ki yes, you will get a child as beautiful as she." Similarly, some other fan wrote, "Get married soon with Joongki and have a Song Song family with your own angels."

Well, some guessed that the young girl could be the actress' niece. As she doesn't have a sibling of her own as her parents got divorced when she was very young, so the little girl could be her niece from a cousin.

Nevertheless, nothing can be said much until and unless Song Hye Kyo herself confirms who the little girl is.