Actress Park Soo Jin showed off her flawless body.

Yesterday, Park Soo Jin posted on her Instagram, "Cracked up while filming" along with a picture.

In the picture, Park Soo Jin is laughing in the middle of her yoga pose demonstration.

She was wearing a pink sports bra and leggings, showing off her skinny body.

Internet users who saw this commented, "Her stomach is so flat", "She eats so well, how is she so skinny?", etc.

Photo Credit: Park Soo Jin Instagram