Why Na'vi Have Breasts

OK, they're small, but Na'vi women definitely have them: Breasts. But why? They're extraterrestrials, not mammals, who don't need them to nurse their babies. So why are they there? Simple. "Because this is a movie for human people," director James Cameron explained in an Inside the Actors Studio interview. He aimed to create a different kind of creature who was also seductive, and he had a definite vision regarding star Neytiri.

The Na'vi are not "placental mammals," Cameron explained to Playboy. But "right from the beginning I said, 'She's got to have tits." But while they exist, they play hide-and-seek behind strategically placed beads so the film could retain its PG13 rating.
(More breast augmentation stories.)