Mel B and Mel C are no longer on speaking terms.

The Spice Girls stars have reportedly fallen out after Mel C pulled out of the band's planned reunion to celebrate their 20th anniversary, which is expected to include a one-off show in London's Hyde Park next July.

A source told The Sun on Sunday: ''While Mel B, Geri Horner and Emma Bunton are ploughing ahead, there is no love lost between the Mels, who aren't on speaking terms and haven't been for two months.

''Mel B is angry at Mel C for what she thinks is a betrayal of their friendship and is refusing to acknowledge her.

''They knew convincing Victoria Beckham to come on board would be tricky but didn't expect Mel C to back out.''

It was previously claimed that Mel C is ''consulting lawyers'' to see whether the Spice Girls could reunite without her and Victoria.

A source said: ''Mel has told the other girls she is consulting lawyers about whether the reunion can go ahead without her.

''She believes she brought music credibility to the group and there is no Spice Girls without her.''

The trio have decided against using the moniker GEM - meaning Geri, Emma and Mel - for their reunited group but are still planning to go ahead with their reunion.

Last month, a Spice Girls track called 'Song For Her' was leaked, their first material for nine years.

A source said at the time: ''Obviously the girls have been recording in the studio over the past few months.

''The plan is very much for there to be new music.''