YoonA showed off a different side in her latest pictorial with 'W Korea' released on August 20 KST, shedding the sweet girl image and bright, melting smile for a chic look of nonchalance.  As the theme seems to be post modern, the shots are all black-and-white for a moody effect as she looks very mature and tomboyish.

In one notable picture, she bares her rather impressive abs that look so good even she can't take her eyes away.  Which is your favorite picture?