A video of Refund Sisters' debut has racked up more than 10 million YouTube views in roughly a week. Photo: Handout
It depends on what you define K-pop as, but the Refund Sisters are probably not your typical K-pop stars.
Brimming with confidence and bad girl vibes, nothing seems to daunt the group's four divas – soloists Uhm Jung-hwa and Lee Hyori, rapper Jessi and Hwasa of girl group Mamamoo – who seem to get along pretty well despite their age gap and different backgrounds.
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