just found this:

If Previously Married
The Celebrant must sight details of the termination of any previous marriage prior to the intended Marriage taking place.

If a party has been divorced, the Celebrant must sight the court papers showing the Decree Absolute, or the Certificate of Divorce.
If widowed, the Celebrant must sight the Death Certificate, (or in the case of a missing person presumed dead, a coroner?s or police report.)
If a marriage has been annulled, the Celebrant must sight the annulment papers
If the documentation is not in English the onus is on the couple to provide written translation by an approved interpreter.

Divorce Documents:
A divorce is granted in two steps in Australia. The Decree Nisi is granted first, followed by the Decree Absolute or Certificate of Divorce one month later.

A Notice of Intended Marriage can be lodged with a Celebrant in the 12 months separation period, but the Marriage Ceremony cannot proceed until a Decree Absolute or Certificate of Divorce is produced to the Celebrant.

In certain circumstances, it may be possible to make application to the Family Court to shorten the period of time between the Decree Nisi and Decree Absolute.
Australian Federation of Civil Celebrants Inc