When Brooke Shields steps from under a waterfall, you can see her nipples through her white shirt.

After the wedding ceremony, a couple lies in bed nude. Nothing is seen however but their shoulders and his back.

One instance of attempted rape (short, nothing seen)

When Dale is captured by Beg and brought back to the tribal camp, she is mobbed by women who tear fragments of her clothes off as souvenirs. No apparent physical assault per se, but the sequence is a bit lengthy as she screams while she becomes less and less covered.