Mel B could not resist taking a swipe at Spice Girls bandmate Geri Horner on the 21st anniversary of her quitting the band - despite the milestone date colliding with their reunion tour.
Scary Spice made the cutting comments as she celebrated her 44th birthday on stage at Manchester's Etihad Stadium.
Birthday girl Mel was presented with a cake mid-performance and used her speech to make a dig at 'deserter' Geri.
Pointing at Geri, Mel told the crowd: "She left on my birthday and it's my birthday today. You better not leave tonight you f*****g b***h."
Geri then responded by pretending to wipe a tear away from her eye.
The ladies then had a mock fight over the cake with Mel shouting out that Geri had broken her costume.
Back in 1998 Geri stunned her bandmates - and Spice Girls fans around the world - by announcing she was leaving the group at the height of their fame.
She later cited depression and arguments between band members as the reasons for her depature.
The news was a particular blow as Mel, Emma Bunton, Victoria Beckham and Mel C were just about to embark on a mammoth tour of North America - which they were forced to continue on as a four piece.
But for Mel B, Geri's decision to leave on her birthday really touched a nerve.
She later said: "When Geri left the group, it was bad.
"She left on my birthday and didn't tell anybody. She didn't show up. We had the American part of the tour to continue."
Luckily the ladies managed to rebuild their friendship, though Mel almost threw a spanner in the works with her 'lesbian romp' claims earlier this year.
In a tell-all interview with Piers Morgan, Mel claimed that she and Geri had a night of passion in the 90s.
The comments were said to have thoroughly riled mum-of-two Geri, but the pair have both laughed off rumours of another rift.
