Last night, 17-year-old Louisa Johnson - mentored by Rita Ora, as you can see - won The X Factor, nabbing the title from the dual mitts of Reggie N Bollie, mentored by Cheryl. 

Now that we've the all important facts out of the way; the real talking point of last night's final results show occurred during winner Louisa's performance of her new single - a cover of Bob Dylan's Forever Young (for realz)...

For those unable to view the clip, it features both Cheryl and Simon simultaneously taking to their feet prematurely to applaud during a rousing key change pause. Given Cowell was partially responsible for the success of Westlife he'd be well versed (apologies) in the ways of the all-important key change.

For those gunning to see another close up of Louisa and Rita's WE'VE WON reactions, here you go.