SISTAR’s “Alone” Vs 4Minute’s “Volume Up”, however it was the sexy Vegas girls turn to take the win.

On the May 4th episode of KBS Music Bank, SISTAR’s single ranked number one on the K-Chart for the 2nd straight week in a row. Hyorin was very grateful for the win, while her members were in a state of shock.

Check out SISTAR’s winning moment and performance below:

[media url="http://www.youtube.com/watch?v=mbetk3xBH0A"]

[media url="http://www.youtube.com/watch?v=4cgtmk6CmxI"]

Congratulations to SISTAR once again!

Sources: Youtube and Korea Times