While Lauren appeared on the last series of X Factor, viewers got to know her street-dancer brother Lewis after he performed on stage beside her during the live shows.
After giving Lauren praise for her rendition of Whitney Houston's 'How Will I Know', head judge Simon Cowell told Lewis to audition for BGT - and it looks like the youngster took his advice.
A source tells The Sun that Lewis is "definitely one to watch" in the ITV talent show, which returns to our screens this weekend.
As well as being a supportive sister, we're sure Lauren will be giving some welcome tips on performing live, handling critique from the judges and the dealing with the fame that comes with starring on a TV show.
Lauren came in fourth place on the 11th series of The X Factor last year.
Britain's Got Talent returns to ITV on Saturday 11 April at 8pm.
X Factor's most shocking moments: