As the camera cut away from the band, the girls stripped down to racier outfits and launched into a choreographed dance routine.
While their outfits were no different to the likes of Beyonce and Britney, some viewers took a disliking to the band showing off their more mature side.
Wish #LittleMix would go back to the relatable image they had when they were on #XFactor. Don’t get why they’ve had to “sex up” so much…
— Red&White4Life (@Oaks_Kimmett) October 16, 2016
“Love me a bit of @LittleMix but getting a bit sick of seeing them in their underwear #sackyourstylist #notclassy”
“Are they dancing in their underwear? #xfactor #I guess after the watershed. #LittleMix,” moaned another viewer.