Idol-turned-actress Nana has shocked netizens with her sexy AF underwear photoshoot. Nana | @jin_a_nana/Instagram On December 23, Nana shocked netizens by posting sexy lingerie shots on her Instagram from a recent Calvin Klein photoshoot. | @jin_a_nana/Instagram | @jin_a_nana/Instagram | @jin_a_nana/Instagram Other photos were also included. Nana then supported the more recognizable Calvin Klein underwear, which…