The accusations came after Little Mix first performed their new track on The X Factor over a week ago (16 October). They debuted 'Shout Out To My Ex' and Twitter went into overdrive, with some users still claiming they have heard the song before... or something very similar.
One Twitter user commented: "@LittleMix 'shout out to my ex' sounds exactly like @grl 'ugly heart' why can't anyone be original anymore?" Another added: "Shoutout to little mix for coming out with a song that sounds identical to G.R.L's original song."
American girl group G.R.L even added fuel to the fire by tweeting: "#ShoutOutToUglyHeart."
shoutout to little mix for coming out with a song that sounds identical to GRL's original song— Morgan Kallman (@morgankallman) October 25, 2016
During an interview with Belgian radio station Qmusic, Jade Thirlwall insisted there was no bad blood between Little Mix and G.R.L. She said: "We're actually friends with Emmalyn from G.R.L and she loves the song."
"Every song is going to have a similar chord sequence, slightly similar lyrics and melodies – it happens all the time," Jade said. "It doesn't mean that they're not both incredible songs."
"I think maybe because it was a girl band as well, I just think people like to have something negative to say," she claimed.
Perrie Edwards then said: "I just think, stop trying to hop on the bandwagon," while Jesy Nelson hit back: "Stop trying to get publicity."
Despite the controversy surrounding their new single, Little Mix have still managed to secure themselves a number one with their new track. They are currently top of the UK charts and found themselves being congratulated by Simon Cowell on Twitter for their success.
He tweeted: "I could not be more proud of @LittleMix reaching No.1. Huge congratulations girls. And as always thank you to the fans."
Simon had also said he thought Little Mix's live performance of 'Shout Out To My Ex' was "one of the best performances ever seen" on The X Factor.
Although, the girls did have to face a slew of criticism when it came to their on stage outfits. The girls donned leotards, thigh high boots and PVC for their number, which led to some claiming their costumes were "too skimpy" and slightly inappropriate for a family show.
However, Little Mix claimed they were "really comfortable" in their attire and Jade hit back: "I think it's a bit double standards. You always see the lads with their tops off and everyone congratulates them and woos them... We get a bit of thigh out and it's a bit of an issue."
Jesy, meanwhile, gave a sassy response on Instagram. She posed in a bum-skimming jumper dress that had the slogan, "Too provocative?", emblazoned across the hem.
Adding a smirking emoji alongside her snap, we're pretty sure it was a nod to the haters, don't you?
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