Netizens were curious and on an online community board, photos were posted of what the Song-Song couple's children would look like.

Using photos from Song Joong Ki and Song Hye Kyo's childhood, they used advanced face detection software to predict what the child for both sexes would look like.

Song Hye Kyo & Song Joong Ki's childhood photos.

The results:

The picture on the left depicted a little girl's face with milky skin and big glittering eyes, presenting a lovely expression.  While the image on the right portrayed a boy with distinct facial features.

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It appears the end-result of the two 'doll-like babies' can pass as celebrities themselves!

Meanwhile, actors Song Joong Ki and Song Hye Kyo have been dating since 'Descendants of the Sun' and recently revealed they will be officially tying the knot in October.