What was the name of the Australian TV series?

Does anyone know the name of the Australian series, now about 25 years old, that was about two sisters, one of whom had been bitten by an alligator. She owned a fashion business and was almost always dressed in white. The other sister (almost always dressed in black from what I remember) was trying to get her hands on the business. The series told about the struggle between the two, and was like an Australian Dallas (or their attempt at it). Thanks!