During Wednesday's show, fans got to see performances from all five of the costumed celebs still in the competition -- The Piglet, The Black Swan, The Russian Dolls, The Chameleon and The Yeti.
Despite a fun, high-energy cover of Elton John's "I'm Still Standing" that kicked the show off on a high note, it was The Russian Dolls who ended up getting the boot.
Their performance saw them donning the music icon's famous feather boas and giant glasses over their outfits, and flying the Union Jack flag all over the stage. It even got a round of praise from the panel. But someone had to go home, and when you get this far in the competition, the eliminations are always gonna hurt.
This week, when it came time, there was only one Russian Doll on stage -- the biggest one -- and after unscrewing the top half, the trio inside were revealed to be none other than the Hanson brothers -- Isaac Hanson, Taylor Hanson and Zac Hanson.
Scherzinger, McCarthy and Riggle were the most excited by the reveal, as they all named Hanson as their final guesses.
When asked why they chose to participate, Zac shared, "It was kind of this unique opportunity to do something very different and also, you know, play to a whole new audience."
"The fact that you spent all these years performing, you're always seen as a certain thing," Taylor added. "People think they know what you are. And [it's great] to be able to just start with music and focus on singing."
Meanwhile, the night was jam-packed with some other top-notch numbers and revealing performances.
After The Russian Dolls opened the show, The Black Swan came out to show off her rich and textured voice with a cover of Ed Sheeran's "Thinking Out Loud."
The Piglet then hit the stage, raising the energy level with a cover of Stevie Wonder's "Superstition," for what might have been his most entertaining performance to date. Although The Yeti gave him a run for his money showing a new side of himself with a cover of Rascal Flatts' "Bless the Broken Road."
Finally, The Chameleon closed out the night performing a fan favorite, "Drop It Like It's Hot" by Snoop Dogg, featuring Pharrell Williams, which he made all his own.
The Final Four will face off yet again next week as season five enters the semifinals.
If you're trying to crack the mystery of the costumed contestants like the rest of America, check out our running list of spoilers, hints and best guesses, where we break down all the clue packages and make wild (surprisingly accurate) predictions about the singers' secret identities.
Check out the video below to hear more about the wild and unexpected unmaskings that have already rocked the fifth season of The Masked Singer.
The Masked Singer airs Wednesdays at 8 p.m. ET/PT on Fox. For more on this exciting season, check out the video below!