f(x) is back with 'Red Light' and 'All Night' on 'Show Champion'!

It's showtime with the ladies of f(x)!

They are back with another fabulous comeback stage, and here are their performances from this week's 'Show Champion'~

♥ Buy f(x)'s 'Red Light' album here

♥ More post about f(x)'s 'Red Light' album here