Joo Won and 2PM's Chansung were caught wearing 'skirts' on the set of '7th Grade Civil Servant'.

The pair were snapped on set, waiting for filming to start in the cold. They wore thick coats against the cold, but apparently that wasn't enough. Joo Won layered two blankets over his pants, and Chansung used a heart-patterned blanket to create skirts for themselves. Joo Won complained cutely, "It's too cold outside," and Chansung responded, "Oh my gosh. You worked hard during filming today," after seeing their photos appear on Twitter.

The photos were completely different from their drama characters, especially in the case of Chansung. Unlike his cool agent character, he was playing around in the photo while he waited to film.