The new series of The Masked Singer will reportedly feature the show's first ever double act.
Fronted by Joel Dommett, the celebrity guessing game is one of ITV's most popular shows and has become a Saturday night staple every new year.
The fourth series has already been filmed, and according to The Sun, it features a twist regularly seen on the US version of the show.
"Having duets on The Masked Singer is a big change which could open the door to having groups on the show," a source told the newspaper.
"This is a pattern we've seen on the US version, where they have had duets appearing for some time.
"That has led to the creation of even crazier costumes, some featuring two singers inside one outfit.
"It has also seen groups included in the lineup, including MMMBop singers Hanson who last year appeared as Russian dolls.
"Producers on the UK show are keen to keep the format fresh now it has become an established part of the schedules and they see this as the perfect way.
"It will also make it harder for the judges to guess who the disguised stars are as they will have to distinguish between two voices.
"They will also have to work out what the link is between the two people, assuming there is one."
The new series is expected to start on ITV1 over the festive period.
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