We've seen stunning performances and phenomenal progress from the four finalists under the guidance of celebrity judges Danny O'Donoghue, Jessie J, Will.i.am and Tom Jones over the course of the series.
Take a look at HELLO! Online's gallery to find out lesser-known, quirky facts about the finalists.
Judges Sir Tom Jones, Jessie J, Danny O'Donoghue and Will.i.am will temporarily set rivalry aside as they join up to perform together. Michael Bublé and Dizzee Rascal will also make guest performances.