Singer Louisa Johnson's Britney Spears Halloween costume requires a double-take

It's Britney, bitch! Wait, actually, it isn't. 

British singer Louisa Johnson sent pop music fans into a tizzy on Thursday when she posted photos of her Britney Spears Halloween costume on social media, with many pointing out the uncanny resemblance that Johnson has to Spears in the photos.

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Channeling Spears' iconic MTV Video Music Awards performance of "I'm A Slave 4 U" from 2001 -- the one with the snake -- the former winner of the UK's "The X Factor" looks so much like the pop music icon that the photos require more than just one double-take.

See Louisa Johnson's Britney Spears costume -- and Britney's original look -- below:

17 PHOTOS
Louisa Johnson dresses up as Britney Spears for Halloween
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Louisa Johnson dresses up as Britney Spears for Halloween
LONDON, ENGLAND - OCTOBER 26: Louisa Johnson attends the Kiss Haunted House Party held at SSE Arena on October 26, 2017 in London, England. (Photo by Joe Maher/Getty Images)
LONDON, ENGLAND - OCTOBER 26: Louisa Johnson attends the Kiss Haunted House Party held at SSE Arena on October 26, 2017 in London, England. (Photo by Joe Maher/Getty Images)
Britney Spears during 2001 MTV Video Music Awards - Show at Metropolitan Opera House in New York City, New York, United States. (Photo by Jeff Kravitz/FilmMagic, Inc)
LONDON, ENGLAND - OCTOBER 26: Louisa Johnson performs on stage during the Kiss Haunted House Party held at SSE Arena on October 26, 2017 in London, England. (Photo by Joe Maher/Getty Images)
(NO TABLOIDS) Britney Spears performs during 2001 MTV Video Music Awards - Show at the The Metropolitan Opera House at Lincoln Center in New York City, New York. (Photo by Kevin Mazur/WireImage)
LONDON, ENGLAND - OCTOBER 26: Louisa Johnson performs on stage during the Kiss Haunted House Party held at SSE Arena on October 26, 2017 in London, England. (Photo by Joe Maher/Getty Images)
Britney Spears performs during 2001 MTV Video Music Awards - Show at The Metropolitan Opera House at Lincoln Center in New York City, New York, United States. (Photo by Kevin Kane/WireImage)
LONDON, ENGLAND - OCTOBER 26: Louisa Johnson performs on stage during the Kiss Haunted House Party held at SSE Arena on October 26, 2017 in London, England. (Photo by Joe Maher/Getty Images)
Britney Spears performs at the The Metropolitan Opera House at Lincoln Center in New York City, New York (Photo by Kevin Mazur/WireImage)
LONDON, ENGLAND - OCTOBER 26: Louisa Johnson performs on stage during the Kiss Haunted House Party held at SSE Arena on October 26, 2017 in London, England. (Photo by Joe Maher/Getty Images)
LONDON, ENGLAND - OCTOBER 26: Louisa Johnson performs on stage during the Kiss Haunted House Party held at SSE Arena on October 26, 2017 in London, England. (Photo by Joe Maher/Getty Images)
(NO TABLOIDS) Britney Spears performs during 2001 MTV Video Music Awards - Show at the The Metropolitan Opera House at Lincoln Center in New York City, New York. (Photo by Kevin Mazur/WireImage)
LONDON, ENGLAND - OCTOBER 26: Louisa Johnson and Grace Chatto perform on stage at the Kiss Haunted House Party held at SSE Arena on October 26, 2017 in London, England. (Photo by Jo Hale/Redferns)
Britney Spears performs during 2001 MTV Video Music Awards - Show at The Metropolitan Opera House at Lincoln Center in New York City, New York, United States. (Photo by Kevin Kane/WireImage)
LONDON, ENGLAND - OCTOBER 26: Louisa Johnson performs on stage at the Kiss Haunted House Party held at SSE Arena on October 26, 2017 in London, England. (Photo by Jo Hale/Redferns)
Britney Spears during 2001 MTV Video Music Awards - Show at Metropolitan Opera House in New York City, New York, United States. (Photo by Jeff Kravitz/FilmMagic, Inc)
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Johnson wore the outfit to the Kiss Haunted House Party in London, where a ton of other stars wore costumes, but the "Unpredictable" hitmaker more than stole the show in her embellished hot pants, green bra top and perfectly tousled hair. Oh, and did we mention her incredible, Britney-esque abs?

The only thing that was missing was the snake! Johnson opted not to risk her life by draping a python around her neck like Britney did 16 years ago.

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Johnson isn't the first star to dress up as another celebrity, of course. Remember last year when Kylie Jenner channeled Britney Spears' fellow pop diva Christina Aguilera?

See stars dressed as other stars in the gallery below:

15 PHOTOS
Stars who dressed as other stars for Halloween
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Stars who dressed as other stars for Halloween
Heidi Klum outdoes herself every year, so for her 2016 Halloween party, she decided that the only person who could top last year's costume was... herself! She was flanked by five impressive Heidi clones.
Kelly Ripa channeled Katy Perry while Michael Strahan immortalized the iconic Left Shark.
Katy Perry is such a big fan of Hillary Clinton, she decided to become her for Halloween!
Beyonce and her crew went full-on Salt 'n Pepa for a flawless family costume.
Never one to shy away from showing her figure, Kylie Jenner embraced her "Dirrty" side to channel one of Christina Aguilera's most famous looks.
Mark Ballas and BC Jean turned heads as Courtney Love and the late Kurt Cobain.
Nina Dobrev and Taylor Lautner both went gray for the night for their Ryan Lochte costumes -- but Nina went the extra mile with that jacked torso.
Kim Kardashian mocked her own Met Gala look, proving once again that she's happy to make fun of herself once in awhile!
Remember Lil' Kim's shocking ensemble at the 1999 VMAs? Miley Cyrus definitely hasn't forgotten!
Kelly Osbourne later revealed she had to layer three bras to perfectly complete her Christina Hendrix costume.
2013 was a big year for Miley Cyrus costumes after her huge VMA performance -- but nobody did it quite as well as Paris Hilton.
Aziz Ansari managed to perfectly capture the essence of The Weeknd.
Shonda Rhimes' Beyonce costume is so excellently done, we want her to dress like this all the time.
Throwback celeb costume! Mario Lopez looked awesome as a vintage Elvis Presley.
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