Kasibulan (2001)

a woman goes to an outdoor bathroom for a bath. She removes her towel and her breasts are visible. A man then sneaks up on the bathroom and starts peeping inside. The woman is then shown completely naked from behind. Her butt is visible. Another man then catches the peeping tom and gives him a thrashing. The commotion however alerts the woman and she puts back her towel in haste. Her breasts are seen during this scene.