Guy Ritchie is the Next Heather Mills

Ding ding! Massive money divorce round two! Now Madonna's getting into the mix, reportedly meeting with Paul McCartney's pitbull divorce attorney.

The Times of London says Madge met with Fiona Shackleton, the hardass lawyer who got water dumped over her head by Heather Mills during her divorce trial.

Shackleton's got a pretty impressive client list -- she also handled Prince Charles' divorce from Princess Di.

Guy -- who's been married to Madge for seven years -- could really cash in. The Material Girl's net worth is believed to be around $600 mil.

Madonna's rep did not return our call.