Lauren was pictured arriving at a London studio along with the rest of her fellow contestants to kick off the second week of the singing competition.
The talented 17-year-old, who is being mentored by Cheryl Fernandez-Versini, posed with her hands on her hips in a loose printed shirt, which she teamed with white jeans and trainers.
Over the weekend, Lauren successfully sailed through to another week after wowing the judges, studio audience and viewers at home with a rendition of Pharrell Williams' hit song 'Happy'.
Lauren was praised by Simon Cowell for her "smart" choice of arrangement.
"That was very, very smart," said Simon. "I loved that version of the song. You got yourself a little moment there. That wasn't karaoke, that was your twist on a fantastic song. It made you come over like a little star."
We're sure Lauren was happy for another reason though, as she also hung out with One Direction's Niall Horan backstage!
Niall popped down to the studios in Wembley on Saturday evening (11 October) to see this year's contestants and he was pretty impressed with the crop of talent.
"The standard this year is super high," he tweeted. "Congrats to everyone last night, you killed it!"
Sunday's results show saw Blonde Electra and Overload Generation become the first acts to leave the competition.
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Watch Lauren's performance below: