Madonna and Guy Ritchie's custody hearing will be made public.
The legal meeting to decide the arrangements for their two sons - Rocco, eight, and David, three - has been moved to the New York Supreme Court.
Unlike English family law court cases, the inquiry - which will take place on March 2 - will be open to the general public.
Madonna - who also has a daughter, Lourdes, 12, from a previous relationship - is planning to move to New York with her children and needs US courts to ratify a custody deal negotiated in London.
A source said "There is going to be a hearing next month and the papers that have been filed will be available then.
"The New York hearing will confirm the English proceedings. There will be revelations, but the divorce remains amicable and intelligently handled."
She will be forced to provide the court with details about her divorce proceedings, including financial arrangements and demands for her sons' welfare.
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