While SNSD member Yoona's skinny legs are grabbing attention, Seohyun's boney arms are catching the attention of fans as well.

On the 21st, SMtown Facebook revealed picture of SNSD preparing for the photoshoot of 'W'. 

In the picture, Seohyun has long wavy hair with white skin with an emphasis on her blushing cheeks. She is wearing a white top and a salmon colored skirt. Seohyun's visible arm in the picture caught the attention of fans. 

Fans have commented, "Why are all the SNSD members so skinny?" and "I should learn how to loose the fat on the arms."