Portia de Rossi nude - Sirens (1993)

Elle Macpherson, Kate Fischer, Portia de Rossi, Pamela Rabe, and Tara Fitzgerald all fully nude on a clifftop as a camera flies in toward them and we see full-frontal nudity from all five girls. From left to right we see Portia, Kate, Pamela, Elle, and Tara.