P.O revealed who he believes is the prettiest female idol.
He revealed his thoughts after DIAs Chaeyeon rocked a recorder by playing Block Bs Her.
During Onstyles Lipstick Prince 2, Chaeyeon was given a chance to demonstrate her unique talents.
When it was her turn, Chaeyeon stated that she had practiced Block Bs song on recorder beforehand.
She asked P.O do the choreography while she played, which he agreed to, surprising all the other cast members.
It was then he admitted he thought she was the prettiest female idol!