Our favorite idols in button down shirts, slacks, and the choker necklaces. Sexy, right? But some angered fans have spoken up to claim that this recent outfit concept from BTOB's "So Pretty" performance is originally by VIXX. 

SEE ALSO: BTOB celebrates 13th anniversary with 3-day fan concert '3,2,1 GO! MELympic'

BTOB, who performed "So Pretty" for the first time on this week's 'M Countdown', were the center of attention for many fans for their new, sexy, stage outfits. However, VIXX fans have pointed out that BTOB's new outfit concept, really isn't 'new'. It brought to mind VIXX's concept from back in November 2015, during the group's promotions for "Chained Up". 

Fans of both parties expressed varying degrees of discontentment toward the similar outfit concepts. Some BTOB fans even apologized, writing, "I'm a BTOB fan, and even though it's the fault of the coordinator, I want to apologize TT. I'm sorry this happened." Some fans geared their anger toward BTOB's coordinators, saying, "Please! BTOB coordinator fix their outfits", "It is totally the coordinator's fault. Don't target BTOB for it", "Coordinator? What are you doing??", and more.

Other netizen comments included, "Dang, I thought BTOB parodied VIXX or something", "It's not similar. It's the same", etc.

What do you think of the controversy?