Singer Brian and f(x)'s Amber have been catching the eyes of netizens with a recent matching hat photo posted on the internet. On May 15th, Brian uploaded a picture through his Twitter, tweeting, "We coincidently arrived to SBS Inkigayo wearing the same hat! ke We are definitely idol singers! ke" In the picture, Brian and Amber are both wearing the same Iron Man cartoon hat.�Netizens stated, "The hats match exactly. Cute", "With this chance, siblings", and "Matching sibling fashion of KPOP idols?"