Victoria Beckham…’not interested’

Sporty Spice.’can’t agree’

   Viva Forever, a planned Mamma Mia!-style musical inspired by the tunes of the Spice Girls, is taking forever to develop because members of the ’90s pop group still can’t get along.       Jennifer Saunders, who starred in cult TV hit Absolutely Fabulous, is writing the show, which follows a mother who takes her daughter to a talent competition, all set to Spice Girls tunes. 
  But sources say the five original Wannabe singers are holding things up. Even though they won’t be in the show, they’re supposed to be giving Saunders feedback and ideas but Melanie Brown (Scary Spice) and Melanie Chisholm (Sporty Spice) apparently can’t agree on anything. “It’s driving Jennifer crazy,” says a source. 
   Meanwhile, the former Posh Spice, Victoria Beckham, is busy with her fashion line, and just isn’t as enthusiastic as the rest.
   The show, which has been scheduled to debut in London by the end of the year, has reportedly been delayed before because of the  former pop stars’ scheduling issues and is likely to be delayed once more.