'Fifth Harmony? More like no harmony': BGT viewers mock Work From Home singers for 'flat, tuneless and boring' live performance
They were formed on Simon Cowell's Stateside talent show, X Factor USA.
But viewers of ITV's Britain's Got Talent called Fifth Harmony's live vocals into question on Thursday night, when the five-piece took to the stage as special guests.
Championed by big boss Simon, the US girl group performed their UK Top 10 hit Work From Home, but Twitter users slammed their choreography, styling and singing.
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No harmony: Fifth Harmony were slammed by Britain's Got Talent viewers on Thursday night after a 'disappointing' live performance
'@BGT can you start using acts that are actually talented? #FifthHarmony what a vocal disaster!' said one Britain's Got Talent fan after the live results show.
'Flat, tuneless and it was boring,' were the words used by another viewer, with 'shocking,' 'so bad' and 'terrible' echoed across the posts as the band began to trend on Twitter on Thursday night.
'Fifth Harmony? More like no harmony,' jested one viewer, mocking the name that the girls were given in the second series of the US show, in 2012.
Currently the world's biggest selling girl group, Fifth Harmony - signed to Simon's music label Syco - have been more successful than British counterparts Little Mix (also formed on The X Factor) and have a 3M-strong army of followers on social media.
'Flat and tuneless': Twitter users mocked their outfits, choreography and vocals
Successful: Currently the world's biggest selling girl group, Fifth Harmony have been more successful than British counterparts Little Mix
Sack the stylist: Sporting double denim, the five piece were mocked for their styling
But the X Factor runners up - comprising vocalists Ally Brooke, Camila Cabello, Dinah Jane, Lauren Jauregui and Normani Kordei - left their loyal following scratching their heads on singing strength.
'I like fifth harmony but wth happened on bgt last night,' asked one confused follower, with another concurring: 'Just watched #5HonBGT - didn't quite work, did it? #FifthHarmony #BGT'
Poking fun at the popular song's title, one BGT fan joked: 'After their performance on @BGT i think @FifthHarmony should go "work" on their vocals.'
Having their say: Though the band has a 3M strong following on Twitter, British viewers were left feeling unimpressed
Shocking: The performance was branded 'so bad' and 'shocking'
Sexy and successful: Championed by Simon Cowell, the girls were formed on X Factor USA
Runners up: They did not win the US talent show but they came very close
Bringing it to Britain: Here with presenters Ant & Dec, the girl group performed a popular UK hit
Fans of the format even urged the judges - Simon, Amanda Holden, Alesha Dixon and David Walliams - to use their buzzers on the special guests after seeing the final eight impressive semi-final acts.
'@BGT @FifthHarmony judges should of used the buzzer on them. #cr**,' the user concluded, while others took issue with the girls' double denim ensembles.
Fashion fans urged them to 'sack the stylist,' saying: 'Fire your stylist what on earth are you wearing.............. #bgt #fifthharmony '
'@FifthHarmony looked like a bunch of 13 year olds doing an awkward performance. Vocals weren't great either! #fireyourstylist #BGT @BGT'
Fifth Harmony were invited to perform in the second part of Thursday night's show, as an interlude for the drama of selecting two final acts for this year's Britain's Got Talent final.
The group are currently promoting their second album, 7/27, and they are due to begin the same-titled tour in Lima, Peru this June.
On tour: Their due to start their 7/27 tour in June, starting in Peru
See ya: The girl group were invited to perform as special guests on the results show
Giddy: They certainly seemed excited to be in town on Thursday night
Short stay: The singers will jet off again at the weekend for more promo
Doing it well: Their single Work From Home reached the Top 10 in the UK
New music: The 7/27 album follows their first, and was released earlier this year
Hanging out: The double denim outfits were certainly revealing, to say the least
Cheeky: They injected some of their signature sex appeal into the styling
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