Fifth harmony hit back at celebrity big brother and girls aloud star sarah harding after she branded them ‘slutty’ fifth harmony hit back at celebrity big brother and girls aloud star sarah harding after she branded them ‘slutty’ fifth harmony hit back at ex-girls aloud singer sarah harding for calling them 'sluts' sarah made the cruel comments during monday night's episode of celebrity big brother reality star sarah claimed their dance routines were all about 'slut dropping' and 'twerking' she claimed girls aloud only wore revealing outfits because it was 'hot' fifth harmony fans didn't take too kindly to her flippant remarks