Keeping her place in the competition, Lauren sailed through to this weekend's live shows and after great feedback from the judges, it seems the 17-year-old could be a serious contender for the X Factor title.
But, making sure she gets to the final first, Lauren was spotted back in the rehearsal studio already preparing for her next performance.
Dressed down in tracksuit bottoms and a crop top, Lauren beat the chill in a stylish leather and faux fur parker jacket.
And, we just love her personalised arm candy!
Her appearance out in London comes after Lauren impressed the X Factor judges with her rendition of Whitney Houston's 'How Will I Know'.
Showcasing her vocals and her dance moves, Lauren even treated viewers to an exclusive performance from her little brother as he joined her and her dancers on stage, throwing some shapes of his own.
All choreographed in, of course!
Following Lauren's performance, she received a standing ovation from her mentor Cheryl Fernandez-Versini, Spice Girl Mel B and Louis Walsh.
While Louis was happy to see Lauren dancing as well as singing for a change, Mel told the young hopeful it was her "best performance".
She said: "You were enjoying yourself, you gave us your personality. Boy, you can sing! Loved it.
The previous week, Lauren was criticised by Simon Cowell for her lack of performance.
Although Simon has since apologised, blaming his comments on being grumpy, after Lauren's song on Saturday, the music mogul explained his reasoning for being a little harsh.
He said: I know I was a little hard on you, but my point was I thought you were better than what you were given last week...
"This is the first time, in a long time, that I've actually seen you as a credible recording artist. Your best performance in weeks."
Meanwhile, Simon lost the second of his four acts as Stevi Ritchie was voted out of the X Factor during Sunday night's results show.
In the bottom two, Stevi battled it out against Andrea Faustini in the sing-off, but was sadly sent home after Mel, Cheryl and Louis all decided to save Andrea instead.
But, he wasn't the only one to be given the boot.
In a double elimination, Only The Young were sent home instantly on Saturday night after receiving the fewest amount of public votes.
Following their exit, the group exclusively told Reveal they were frustrated they never got to fight for their place in a sing-off.
Band member Mikey told us: " I feel that if we had [had a sing-off], we'd still be in the competition.
"We had planned to do 'I Won't Give Up' by Jason Mraz and had devised a really good take on it. We hadn't done a ballad before, so it would've been nice to show the judges and the public that we can do that sort of stuff too."
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Watch Lauren's performance of 'How Will I Know' here: