Even her mentor, the very likeable Demi Lovato, admitted it's hard to warm to the 'capital C-e, capital C-e' madam, although she still advanced her to the top 16.
Blondes have more fun: Postroom princess CeCe Frey has been transformed from a dark-haired girl next door into a retro blonde bombshell
So ahead of all the important live shows, the 20-year-old (along with her fellow 15 hopefuls) has been given a makeover; only hers is much, much more extreme.
What better way to try and erode the sour memories of the past, after all?
So goodbye, brunette mean girl and hello, blonde bombshell or should we say, Gwen Stefani jnr?
Lofty ambitions: Sweet single mom sports a huge mohican in the after pictures... and looks rather splendid
But her hair matches the lofty ambitions held for in the makeover shot, as she sports - and really rocks out - a new mohican.
The X Factor's live shows begin on November 1, and all of the last 16 have been given a new look... or at least a polish, ahead of them.
Keeping her own style: Beatrice Miller's revamp was very much in keeping with her own look
She's like a rainbow: Diamond White was given a pep of techicolour and a whirl of curl
New York native: Westchester teenager Carly Rose remained glossy haired and preppy
Diamond White, who is also 13... but hails from LA by way of Detroit and Chicago, was given a colourful pep on her savvy street style.
She's a grown up little lady, having toured with a production of The Color Purple at the tender age of eight.
Who's smiling now? Jennel Garcia looks lovely in her new glossy promo
Do the time warp: Sister C had something of a Regency look about their new outfits
Supergroup: Lylas were put together by Simon and co after they failed in the opening rounds
Uptown girls: The ladies had a mish mash makeover
Meanwhile Lylas, a group compromised of unsuccessful soloists looked more together than ever after their exciting transformation.
The boys were less trussed up in bright hues.
No extra cool needed: Willie Jones just slipped into a smart suit and looked the part
Looking smart: Vino Alan saw some small changes that added up to a big style impact
Easy peasy: Arin Ray looked great anyway, so they just gave him a new jacket and T-shirt
Whereas Arin Ray just got a new jacket, T-shirt and chain.
Vino Alan's look was polished and came up shining like silver; a fatigue style jacket raising his game instantly.
Improvement: Lyric already had attitude, but now it's channelled in the right way
Just a bit of polishing: David Correy lost his hat and debuted a sleeker look, it really worked
While David Correy was rendered sleek in a black vest, and out of that denim gilet.
Jason Brock was kept in a suit, but his look was sharper but still flamboyant.
Suited and booted: Jason Brock was given a flourish to his sharp sartorial lines caption here
Stick with what you know: There was no messin' with Tate Stephens country look caption here
Three's not a crowd: The Emblem 3 boys looked pouty in their new vests caption here
Emblem 3 were pulled out of their surfer clobber and into vests