Four of Diamonds wowed judges during their first live performance on 'The X Factor'.
The girl group - comprised of Lauren, 22, Caroline, 19, Sophie, 19, and Yasmin, 17 - were originally kicked out of the competition during Judge's Houses, but were drafted back in to replace Brooks Way, after the sibling duo were disqualified from the singing competition when it emerged that Josh Brooks, 17, had allegedly assaulted his former girlfriend.
During their performance, the quartet stunned the judging panel - including mentor Louis Walsh - with their rendition of Kim Wilde's 'You Keep Me Hangin' On'.
Sharon Osbourne said: "To come in here last minute, when everyone else has been working with the 'X Factor' team for weeks, and you come in cold like this and you give such a great confident performance, really well well done. And welcome! Welcome to the 'X Factor' stage, it's a real pleasure to have such a gorgeous girl group as you here."
Fellow judge Nicole Scherzinger branded the girls as her "favourite girl group" and Simon Cowell said he "couldn't believe [they] weren't put through in the first place".
Elsewhere on week two of the live shows - which saw the contestants perform a range of Motown hits - it was 20-year-old Ryan Lawrie who failed to impress Simon with his rendition of 'Superstition'.
The 57-year-old entertainment mogul said: "Ryan, I hate to be the party pooper tonight but this didn't work. I had a feeling this was going to happen when I knew that Nicole [Ryan's mentor] chose this song for you. It was mechanical. It didn't feel real, I thought the choreography was really really old fashioned. The last, maybe, ten seconds of the song were good, but this was a mistake. And I really feel bad for you."
'The X Factor' results show - which will include a performance from the show's alumni Little Mix - will air on ITV at 8pm on Sunday (16.10.16)