There are many variations of this gesture with the most common feature being a minimum of one finger touching the glasses frame. The most common variation involves one hand with the index finger and thumb touching the glasses frame right next to the lens.
Visual Examples
Modeled by Aki Hoshino, Bang Eun Young, Kim Yoo Ha, Hwang Mi Hee, Kim Ha Yul, Lee Kyeong Min, Min Seo Hee, and Yumi Sugimoto
Gallery last updated May 20, 2009
HAHAHHAHA omg i NEVER realized this was actually a pose until now. good observation ^^