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Reality TV fans can't get enough of The Masked Singer, the new series based on South Korea's King of Mask Singer*.
Stars disguised in head-to-toe costumes, and masks, face off each week in a singing competition, with the audience and a panel of judges voting on who should advance — and which losing competitor will be unmasked at the end of each episode.
Nick Cannon hosts, and the judging panel includes Ken Jeong, Jenny McCarthy, Nicole Scherzinger and Robin Thicke.
Online rumors have been swirling about who the secret singers could be, with Carrie Underwood, T-Pain, and Donny Osmond among the possible contestants.
Until we learn the truth, see their elaborate masks below — and see which celebs have already been unmasked.
Speaking of reality singing competitions, watch the video below to see the top 10 most shocking blind audition moments from The Voice Season 15.