The Piggy Dolls are back on today's episode of Music Core for their comeback promotions. In a sharp contrast to their debut, the girls are making their comeback with a slimmer image, which was the result of continuous late night practice sessions ahead of their comeback. The girls had debuted with the hopes of giving other overweight people the confidence to stand out, so this weight loss has actually put the company in quite the predicament. Their group name Piggy Dolls also doesn't quite match up to their current image now. Their comeback track "Know Her" has a reggae beat and a SynBrass sound that match the cute and witty lyrics. Without further ado, check out their comeback stage below!