Whack on those glittery stilettos and a Union Jack mini, because Posh, Sporty, Ginger, Baby and Scary are officially about to spice up our lives once again.
The highest-selling girl group of all time will perform at the London 2012 Olympics closing ceremony on Sunday.
UK tabloid The Sun published pictures of the fabulous five rehearsing on podiums on top of black cabs at a Ford car plant in Dagenham, East London.
Victoria Beckham, 38, Mel C, 38, Geri Halliwell, 40, Mel B, 37, and Emma Bunton, 36, have been the subject of reunion rumours since they posed together briefly at a press conference last month to announce the pop musical based on their hits, Viva Forever.
It will be the first time the girls have performed together since their 2008 reunion tour (yes, the one that never made it down to Australia sob sob).
Other acts seen at the rehearsals include George Michael, Jessie J, Kate Bush, Ed Sheeran, Queen guitarist Brian May, Annie Lennox, Tinie Tempah, the Pet Shop Boys and Monty Python's Eric Idle.
One Direction, Kaiser Chiefs and Madness will also fly the flag for Britain at the ceremony.
On the unconfirmed list, according to the UK's Telegraph, there's Adele, the Rolling Stones, Elton John, Paul McCartney, Take That, Muse, The Who, Pink Floyd and Paul Weller.
That's one right big British musical sandwich, innit?
Will you be watching? Tell us below.
Amazing flashback video: 'Spice Up Your Life'