Adele admitted performing in front of the 'X Factor' judges made her nervous.
Although she has multiple awards for her music - including an Oscar and a number of Grammys - Adele said singing on Sunday's (13.12.15) show in front of the panel - Simon Cowell, Rita Ora, Cheryl Fernandez-Versini and Nick Grimshaw - was terrifying.
After giving a stunning performance of her comeback single 'Hello' at the SSE Wembley Arena, Adele said: "I don't think I could go through that again. You're so close, I feel like I'm auditioning. You look so far away on the telly."
However, the singer - who is a huge fan of the TV talent show - admitted she loved every second of performing, saying: "That was so amazing! I've been waiting for half my life to do that. Thanks for having me. I nearly burst out laughing the whole way through. "
Adele wasn't the only star to perform on the final, with One Direction making what is believed to be their final TV appearance before their upcoming hiatus.
The quartet - Niall Horan, Liam Payne, Harry Styles and Louis Tomlinson - performed their latest single 'Infinity' as they returned to where it all began for them before Simon, who put them together as a boyband on the show, shared some sweet words.
He said: "This takes me back five years ago when I met five guys as solo artists. I know you are taking a break, you deserve a break and I just want to say thank you, enjoy the break. Enjoy the time off, have a fantastic time. I'm proud of who you have become. You have been an absolute pleasure to work with."
Host Olly Murs then introduced a video featuring a host of famous faces including David Beckham, Danny DeVito, Little Mix and Wayne Rooney, who paid tribute to the group.
Danny, who starred in their 'Steal My Girl' music video, quipped: "Spend some of that money and while you're at it take some acting lessons."
A video of Beckham showed him singing along to their music before saying: "Boys, what can I say. Five years and you have given so much to so many people. You are unbelievably talented but more importantly unbelievably nice guys. You need to come back soon or you're going to have more videos like that."
Soccer star Wayne told them to "enjoy your holidays" while Little Mix proved they are firmly Team One Direction when they said: "You guys have smashed it for many years and we are so proud of you."
Simon then added: "It's been a privilege, it's been fun. Enjoy the break and I'll always be there."
The quartet performed one last song, 'History', which they have stated is a thank you to their fans, as a video montage of them played in the background.
They shared a group hug before Liam told Olly: "We've had the most amazing five years, we can't believe what's happened to us. We're sad to be going away for a while but we need it."
Earlier "ThisIsNotTheEndOfOneDirection" was trending worldwide on Twitter as fans shared the hashtag and their hope that the band will return after their planned hiatus.
Coldplay also took to the stage to perform 'Adventure Of A Lifetime'.