On "The Masked Singer" Season 13 finale, the Pearl, Boogie Woogie, Coral and Mad Scientist Monster costumes were unmasked and the winner revealed.

In the final moments of the show, Pearl took off her mask and revealed herself as country singer Gretchen Wilson. Robin Thicke, one of the four celebrity judges on the show, was the only one of his colleagues to guess Pearl's identity.

Boogie Woogie, Coral, Mad Scientist Monster and Pearl faced off for the Golden Mask trophy during the singing competition's May 7 finale