You've probably read a few best replies in G-Dragon articles mentioning B2ST's Junhyung. Well, the topic of copying styles came up again on Bestiz and Pann today.
As expected, there's a lot of fan war in the comments. Bestiz doesn't have a best reply service, but I'm pretty sure you can guess the arguments of either side yourself.
The OP wrote, "It's not like the pieces are basic pieces you can get from anywhere... They specifically chose the same 'Balmain' brand. G-Dragon's outfit chose is unique in that it's also specifically a women's clothing piece. Too close to say that it's a coincidence."
Source: Bestiz, Nate Pann