The Spice Girls could be set to sign a multi-million pound deal to play gigs as a foursome in Las Vegas.

Victoria Beckham has given her blessing to let band mates Mel C, Mel B, Emma Bunton and Geri Halliwell perform without her as she continues to focus on her fashion career.

A Las Vegas source told the Daily Star newspaper: ''Mel B has been working on her contacts for weeks now.

''Victoria has not budged on her stance to not join them, so they are planning to go out as a foursome.

''It will take them a good 18 months to get all the parts in place if they want to do a residency and possibly a tour to follow.''

The band mates have been discussing a residency at Planet Hollywood, following in the footsteps of Britney Spears, and the shows are being planned for 2016, which marks the 20th anniversary of the band's hit 1996 song 'Wannabe'.

The concerts could earn the band up to £20 million but Victoria, 39, feels her days on stage are over and Mel B, 38, is taking the lead on the project, while promoters are said to have approached Backstreet Boys to perform as a support act.

Brian Littrell allegedly said: ''We are actually in early talks about maybe doing a world tour together with the Spice Girls'', before the band denied the claims.