HyunA is known for her long hairstyle, but it seems she'll be showcasing a different kind of sexy charm by opting for a shorter blonde style this time.

SEE ALSO: Hyuna and Hyunseung's return and comeback date as Trouble Maker confirmed!

HyunA went on a selca spree in the practice room with all of her fellow blonde dancers lying down on the floor in exhaustion, showing how hard they're preparing for her upcoming comeback with unit Trouble Maker.

Judging by her previous photo with Hyunseung, it seems the two will be matching for their upcoming duo promotions with blonde hairstyles.

Trouble Maker will make their comeback on 'M! Countdown' on October 24!