(BANG) -The Spice Girls will star in the ''greatest after-party in the world'' as part of the Olympics closing ceremony.

The girl band, who have reunited for the London 2012 Games, will arrive standing on top of five black cabs on Sunday (12.08.12), reports the Daily Star newspaper.

The plan for the routine involving Victoria Beckham, 38, Geri Halliwell, 40, Emma Bunton, 36, Melanie Brown, 37, and Melanie Chisholm, 38, was unveiled when they were pictured practicing their moves at a secret rehearsal.

More than 20 pop and rock legends will perform 30 British songs at the show.

Artists said to be involved in the two-and-half-hour concert include Queen stars Brian May, 65, and Roger Taylor, 63, who will perform 'We Are The Champions' with comedian Russell Brand, 37.

The Who and The Rolling Stones are also booked for the lineup.

The show titled A Symphony Of British Music is being masterminding by David Arnold, 50, who has written music for James Bond movies and TV shows 'Sherlock' and 'Little Britain'.

He told The Telegraph newspaper: ''To me, this should be the greatest after-party in the world. If the Opening Ceremony was the wedding, then we're the wedding reception. We're the one where everyone gets out of their cars at the village hall, goes 'Wasn't that lovely, everyone looked great, let's put on 'Blame It On the Boogie' and have a laugh.'''