Ex-Oasis frontman Liam Gallagher sent high-profile matrimonial lawyer Raoul Felder to Manhattan Family Court yesterday to demand that baby-mama celebrity writer Liza Ghorbani sign a confidentiality agreement before negotiations even begin.

The pretty blonde’s own high-profile lawyer, William Beslow, told the judge that Ghorbani would have been happy to sign such an agreement without a judge’s say so, had she simply been asked. Neither Felder, who has repped Rudy Giuliani and the former wives of Patrick Ewing and Martin Scorsese, or Beslow, who is handling Demi Moore’s divorce and won a multi-million-dollar support deal for Linda Evangelista, would comment on the Gallagher case.

Gallagher wants the agreement in place before he forks over any information about his assets as part of the support discovery process.

Ghorbani is seeking support from the married rocker, who has children by two other women and had desperately tried to keep news of the 7-month-old daughter out of the papers.