We've all spilled the beans on a sibling's secret before, and Marie Osmond is the latest to accidentally let some details slip about her brother, Donny.

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During an interview with Access Live, Marie may or may not have disclosed that Donny is the Peacock on the outrageous new series, The Masked Singer.

On the Fox show, the costumed Peacock told the judges that he started performing at the age of five, and that he was friends with Michael Jackson. So the Access Live hosts decided to do a little sleuthing, and asked Marie what age Donny started out in Hollywood.

Marie's response very strongly suggested the man behind the feathered creature's mask is her brother. After saying he did, in fact, begin his career at the tender age of five, she also added: "I told him, 'Why are you giving away such easy clues?'"

Perhaps realizing she might have revealed a bit too much, Marie backtracked and said she wasn't admitting to anything. "I don't know!" she exclaimed when asked if her previous statement was a confirmation. "But I know that we started at NBC, which was the peacock."

Ooh, interesting! But even without Marie's admission, viewers have been guessing it's the Dancing With the Stars champion behind the beak for weeks. According to Fox, a whopping 70% of Twitter users think the bird is Donny. The next guess is Neil Patrick Harris with just 7% of the vote.

To find out if the animal really is Donny in disguise, tune into The Masked Singer at 9 p.m. EST on Wednesdays on Fox.

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Jennifer Aldrich
Editorial Assistant

Jennifer Aldrich was the editorial assistant for CountryLiving.com.