Why the subtitles were there?!?

The Kpop girl group MAMAMOO performed in 'Weekly Idols' airing on 'MBC every1'
last Wednesday Sep. 2nd. They are making issues by posting their snap photos on online community.

Most of viewers who saw the photos reacted,
"OMG I was shocked :)", "Why the subtitles were there?!", "Hwasa has Beyonce leg" etc.

↓Hwasa, the girl on the rightist, has... no pants?!


↓Ah~ It was hot pants!!
▲Image Source:A capture of MBC every1「Weekly Idols」