Check out f(x)'s group teaser pictures for '4 Walls'

Following their MV teaser and individual teaser pictures, f(x) has now released their group pictures for '4 Walls'!

Take a look at their lovely photos below~

♥ Preorder f(x)'s 4th album '4 Walls'

♥ More about f(x)'s '4 Walls' here