When the people in pig masks abduct Julie, she had her hands behind her neck, about to unfasten her bikini. When they walk in, she gasps and is seen from behind, rapidly bringing her hands upfront. The next frame cuts to her close up, with her hands still behind her neck.
In the first scene, the dancers aren't doing the Hawaiian hula. They are performing the Tamure, the national dance from Tahiti (French Polynesia).