Still remember Yuri's sleeping Habit in Invincible youth? ^__^
I just realized that Yuri has that sleeping habit long time ago and cute YoonA has imitated this habit of Yuri during a Radio live broadcast when they still just debuted.
YoonA looks really pure and pretty, then as usual  the girls always having  fun to show their charming expression in front of camera ^___^ , love it~~~~~

video credit to aslotussradio

nicholas@Girls' Generation