Complex sentence: Goldsmith is the daughter of Melbourne restaurateur and nightclub owner Brian Goldsmith and English actress Rhona Newton-John, her aunt is English/Australian singer and actress Olivia Newton-John, bass guitarist Brett Goldsmith is her elder brother.
Split into simpler sentences: Goldsmith is the daughter of Melbourne restaurateur and nightclub owner Brian Goldsmith and English actress Rhona Newton-John. Her aunt is Olivia Newton-John, and the bass guitarist Brett Goldsmith is her elder brother.