A tweet just came out by JYP on Twice's twitter page stating the following:
The message was translated roughly by a bot but it still conveys the message of the apology and that they did not mean for this to happen and that they will talk to the stylist to get to the bottom of this.
The tweet is here:
For those who are unaware, people notice that there was outfit similarities between Blackpink Jisoo's hanbok outfit for How You Like That (shown below) and Dahyun's hanbok outfit for Twice Dahyun and Chaeyoung's Melody Project 'Switch to Me' (also shown below)
Jisoo's hanbok outfit in How You Like That
Dahyun's hanbok outfit in Melody Project Switch on Me