Fergie revealed how she and husband Josh Duhamel keep things hot during the holiday season -- and it involves a sexy costume.
"One day every holiday season, he comes home and there's a naughty Mrs. Claus," the Black Eyed Peas front woman revealed to Ellen DeGeneres. "It depends how good he's being!"
A playful Fergie, 37, added, "It's a surprise. It's naughty and nice at the same time. It's super cute and fun."