From David and Victoria Beckham leading the fashion pack, to Joanna Lumley and Jennifer Saunders having a good old laugh, the fashion pack were well and truly out in style for this glamorous event.
Michael Forever - Tribute Concert
The stage at the Millennium Stadum is ready for a four hour celebration of the King of Pop's music.
Most acts arrived in Cardiff yesterday and earlier this morning every artist took part in a full dress rehearsal before doors opened at 4.30.
The JLS boys spent yesterday afternoon playing golf, before enjoying dinner with family and friends, including Rochelle from The Saturdays. The boys will appear in both acts of the two part show and will also appear on stage with some very special guests.
Pixie Lott has spent the past week rehearsing for her performance and confessed to me last night that she'll perform some ballet moves on stage, later tonight. She'll also sing one of Michael's biggest No.1 hits from the 90s. "I'm so glad I've got this song, as it's one of my favourites and such beautiful track."
Alexandra Burke rehearsed late last night and confessed to me that she'll perform a track from Michael's 1995 HIStory album as well as a classic Motown song.
Ne-Yo will open the show and Leona Lewis will provide a moment of calm when she performs an acoustic version of one her favourite MJ tracks. Jennifer Hudson and Christina Aguilera have also flown in especially to perform at the show.
Michael Jackson's mother Katherine, his three children, sister LaToya and brother Tito, Jackie and Marlon will also attend the show which will be hosted by Jamie Foxx.
Chat show host Ellen DeGeneres was so impressed with this singing schoolgirl she invited her to sing live on TV. See it for yourself here...