The Unnamable II: The Statement of Randolph Carter (1992)

The DVD includes behind the scene footage of a naked Julie Strain trying on the monster costume. In another scene, she's wearing a t-shirt and sweat pants while wearing the mask. As a joke, she drops her pants and wiggles her bare butt at the camera and crew. Then she lifts her shirt to reveal her breasts and a make up guy powders them with a huge sponge.