They were flattered into dressing in those clothes .They were role playing in costume .They wanted to look funny in the avatarverse .They were in disguise as a cosplayer .
What reason might someone dress up in such an outfit ?
Whether it flattered them , was so gorgeous , or just FIERCE ( ! ) , they were a cosplayer 's dream , and if you lived in the avatarverse , those would be your clothes . OR It was an outfit or disguise that was just too darn funny .