Wonder Girls' 'Why So Lonely' won this week's M Countdown!

It's another well-deserved win for the Wonder Girls!

The girls have won this week's M Countdown, and you can now watch their winning 'Why So Lonely' performance below~

Cam Versions

Sunmi

Congratulations Wonder Girls!

♥ Buy Wonder Girls' 'Why So Lonely' ♥

♥ More about 'Why So Lonely' ♥