Kelly Ripa and Ryan Seacrest dress up as each other for Halloween: See all their costumes

"Live with Kelly and Ryan" -- but wait, which one is which?

Kelly Ripa and Ryan Seacrest went all out for Halloween this year, debuting a collection of top-notch costumes, and we love them all. But one ensemble overshadowed all the rest: They became each other!

Prosthetics, wigs and a whole lot of makeup transformed Kelly into Ryan and vice versa, creating a vaguely nightmarish mutation of the duo.

Although the swap was their most impressive transformation, the co-hosts donned countless costumes to celebrate the holiday. Among their inspirations? Wonder Woman, "The Handmaid's Tale," and their teenage selves.

Take a look at all of Kelly and Ryan's Halloween costumes in the slideshow below.

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Halloween 2017: Kelly Ripa and Ryan Seacrest
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Halloween 2017: Kelly Ripa and Ryan Seacrest
#Halloween life swap - The treat was playing @kellyripa, the trick was the transformation #LIVEHalloween
Ryan Seacrest shared this gallery of photos of various Halloween costumes he and Kelly wore.
We have so many more surprises tomorrow on our #KellyandRyan #LiveHalloween! #StrangerThings
Under Gelman’s eye. #LIVEHalloween
Happy Halloween from little red and me! #livehalloween #livekellyandryan 👻😈🎃☠️🕷🕸
@ryanseacrest is a Wonder Woman and a helluva guy! #livekellyandryan #livehalloween 🕷🎃🕸👻
Wonder Wo-Man! #livekellyandryan #livehalloween 👯🕺🏻👯🚶🏼‍♀️
Date nights are the best! #livehalloween #livekellyandryan 👻🎃😜
Backstage at our biggest Show of the year #LiveHalloween! #KellyandRyan #Halloween #guardiansofthegalaxy #WonderWoman @michchampagne @hairbydianed @leglambeauty
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