Brian Joo have the same caps with Amber??

Brian Joo just tweeted a picture on twitter just now, let's see what's with the picture?

SBS인기가요에서 앰버랑 우연히 같은 모자쓰고 왔어요ㅋ 역시 우린 아이돌가수ㅋ Came to SBS & realized that Amber & I have the same exact hat: IRONMAN..

Wow that's so coincidence ^^same hat~~Hwaiting for the performances today~~~