Artistic director Kim Gavin promises that the London Olympics 2012 closing ceremony is going to be "the best after-show party ever".

The London Olympics 2012 has been touted by fashion enthusiast as being one of the most fashionable Olympics ever. And now Artistic director Kim Gavin has promised viewers  that the London Olympics 2012 closing ceremony is going to be "the best after-show party ever".

The closing ceremony, which begins at 21:00 BST on Sunday, will see 3,500 performers in the stadium.  Called the Symphony of British Music, the event will showcase "British creativity in the arts" and take people on a musical journey from Elgar to Waterloo Sunset in 30 tracks, Mr Gavin said. He explained that while the flags would process in, the athletes would come in as "friends" to form a "mosh pit" for the show.

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Between 200 and 1,000 seats are to be put up for online sale on Sunday after the set has been moved into place.

The Spice Girls are also prepping for their highly anticipated reunion performance for the Olympics closing ceremony. The lovely Spices -Scary (Melanie Brown), Posh (Victoria Beckham), Baby (Emma Bunton), Sporty (Melanie Chisholm), and Ginger (Geri Halliwell) - will be rocking out like champions at the London Olympics closing ceremony on Sunday. The legendary pop group gave fans a taste of what is to come when they were spotted rehearsing.

Gavin, who has been appointed as creative director and choreographer for the ceremony, has also promised an extravaganza involving "our most globally successful musicians" as well as rising stars.

Gavin, who also directed the Diana memorial concert in 2007, said it would be "the biggest after-show party the show being the sport". "We want to create a fabulous emotional experience, something that people will remember for years to come. It will be an elegant mash-up of British music," he added.

Kate Moss and Naomi Campbell will be part of the Olympics 2012 Closing Ceremony. According to The Daily Mail, Moss and Campbell will wear classic outfits by top designers such as Vivienne Westwood and Alexander McQueen in a ­spectacular music show at the London stadium on Sunday, August 12.

Stars rumored to perform include Sir Paul McCartney and Sir Elton John.