Victoria Beckham has been struck down with a chest infection, putting the Spice Girls' world tour in jeopardy.
The 33-year-old singer is worried she will not be fit enough to join the other girls for rehearsals in a few weeks time ahead of their performance at the Victoria's Secret Fashion Show at Hollywood's Kodak Theatre, which will be aired on November 15.
The actual tour kicks off on December 2, in Vancouver, Canada.
A source said: "Victoria can't get rid of her infection. She has been fighting it for two months.
"She's worried she won't be fit while all the other girls are turning their bodies into machines."
Victoria - who is due to fly to London with her fellow Los Angeles-based bandmate Mel B today (19.10.07) to shoot the group's video for new single 'Headlines' - admitted she has already been forced to miss a couple of rehearsals.
She said: "All the others have done a few sessions but I haven't had a chance.
"We've all seen a lot of each other, though, and it's amazing how natural it all feels."
Meanwhile, the reunited girl group - Victoria, Mel B, Emma Bunton, Mel C and Geri Halliwell - have announced yet more dates for their comeback tour.
The 'Wannabe' singers have added two Manchester dates. Mel C revealed: "The Spice Girls will be playing Manchester. We will be at the MEN Arena on Wednesday 23 and Thursday 24 January 2008."
The Spice Girls - who will also play in Los Angeles, New York, Sydney, Cape Town and Hong Kong - previously added an extra 16 London shows after tickets for the one initial concert on December 15 sold out in 38 seconds. | 
