It's been a whirlwind seven years for former The X Factor contestant Holly Tandy, who has truly blossomed since her time on the show. Back in 2017, a young 15 year old Holly stepped onto the stage and impressed judges Simon Cowell , Nicole Scherzinger , Sharon Osbourne , and Louis Walsh with her powerful performance of Alicia Keys' hit If I Ain't Got You. Under Sharon's wing during the live shows, Holly, hailing from Barnsley, managed to secure a respectable seventh place, while Rak-Su took