The pair are thought to have had a tense exchange before keeping their distance from one another at the party, after Mel claimed in a recent interview that Geri has lied about her age.
After attending Victoria Beckham's glitzy birthday bash, Mel B took to Instagram with a tribute to her fellow Spice Girls - but her followers immediately struck back.
Victoria Beckham's Spice Girls 'U-turn' after surprise 50th birthday reunion ok.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from ok.co.uk Daily Mail and Mail on Sunday newspapers.
ALISON BOSHOFF: However, although Victoria, Mel B, Mel C and Emma Bunton were all keen on the doc, after a number of meetings Geri Halliwell was still against the idea.