Kara Han Seung Yeon's surprising six back is drawing attention online.

A photo of Han Seung Yeon performing on rehearsal for Kara solo concert, which takes place at Seoul Olympic Park on March 18 and 19, was unveiled.

In the photo, Han is showing off a solid six pack contrast to her cute image. 

Netizens commented "Always thought she'd be cute", "Proof of hard work".

In addition, Kara is off to Asia Tour starting in March.

Photo: Unionbay