Thought the hairstyles for Girls' Generation's comeback was done and set? �Nope. Seems like they're still in their process of metamorphosis.

The girls are especially having fun teasing their fans through their personal SNS and giving them heart attacks. �Sooyoung in particular had a stage one phase of cutting her hair short, but she has now dyed it a shocking pink for phase two! �

She posted this on Instagram and Weibo with fans expressing their pleasant surprise at seeing this stylish, bold new look on her. �She is rockin' it with style, but what in the world does Girls' Generation have in store for their fans? �What concept is their comeback? The new hairstyles only raise more questions!

SEE ALSO: "They're so good, this is what K-pop should be like," Girls' Generation's past live performance gains spotlight after 8 years

Hello #thailand #?? ??

A photo posted by Sooyoung Choi (@hotsootuff) on Jun 10, 2015 at 12:16am PDT