Posh Spice Victoria made a block booking of the front row of London's O2 arena for her family to ensure that they had the best views available.
However, Mel B, Geri Halliwell, Emma Bunton and Mel C are said to be furious that their families were relegated to cheaper seats, which are allocated by the promoters.
A source said, "Victoria got in first and made sure her nearest and dearest would have the best seats in the house to see the Spice comeback. She booked a whole row just for her family so they had the best view of the stage. The girls' jaws dropped when they found they had been beaten to the punch by Victoria".
The band opened their London shows on Saturday to a sold out audience. Victoria's three sons, Brooklyn, eight, Romeo, five, and two year old Cruz, were in the crowd accompanied by Victoria's parents, Jackie and Tony, her sister Louise, her brother Christian and her nieces and nephews. Her soccer star husband David was also in the audience but sat away from the family.
The boys also watched their mother in action the following night and on Tuesday they appeared on the stage with her during the band's hit song 'Mama'. They were joined by Mel B's daughters, Phoenix, eight, and eight month old Angel and Emma's four month old baby boy Beau.
The only Spice child missing was Geri Halliwell's 19 month old daughter Bluebell, who was ill with chickenpox.
Mel C is the only member of the bands still to become a mother.