After the shocking truth fans received on SNSD's brutal diet schedules, it seems like no understatement that the ladies of SNSD have the skinniest bodies in the k-pop industry (with some exceptions). This fact has been proven once again on today's Family Outing Season 2 as the group's resident doe, YoonA, revealed her true body weight at village sauna! No excitements yet, guys - she's covered from head to toe. To give a brief summary on what happened, YoonA and her newfound "family" have gone to a local mud flat at SooRak Village to engage in a brutal fight to earn the title of an "Honorary Citizen." After getting soaked in dirt, they  headed to nearby public spa to wash off. Before entering, they found a scale sitting in its lonesome, and decided to put YoonA on it. The green digital numbers then began to soar... and stopped at 48.5 kg. That's converted to merely 107 pounds, including her wet clothes! After looking at the stunning numbers, Shin Bong Sun yelled, "YoonA, you're so skinny! I'm not measuring mine. Thanks for sharing yours!" and escaped her turn to stand on the scale. Considering her tall height of 5"5 - which computes to an approximate number of 17.8 in Body Mass Index - YoonA is definitely categorized as underweight. Although her thin body undoubtedly defines hotness, she should definitely gain more weight for the sake of her health!