f(x)'s Krystal continues to reveal old photos on her Me2day.
After revealing photos with Victoria,Sulli and Amber,she shares some photos taken with main vocalist Luna.
She mentioned,"These photos are the oldest,we were so happy,these photos were taken in New York:.
The girls are seen doing various expressions in the photos above while posing with a can of Red Bull.
Fans commented,"so cute","they drink Red Bull too?" and etc