f(x) has arrived for their Music Bank rehearsals

It's a Fri-Date with the girls of f(x) on tonight's Music Bank!

Krystal, Victorial, Luna and Amber are already at the studio for their rehearsals, and below are the video and photos taken upon their arrival~

♥ Buy f(x)'s 4th album '4 Walls'

♥ More about f(x)'s '4 Walls' here