Many women claim to be on a never-ending quest for that perfect pair of pants. Their biggest concern…“How does my butt look in these pants?”

Women around the world may soon have the answer. Dr. Lisa Macintyre, Professor at Scotland’s Heriot-Watt University, and a team of researchers, are on a mission to determine which styles, colors and types of fabric best flatter the female butt. The goal—to provide information that will help clothing designers create body-enhancing attire.

Female volunteers are photographed, from behind, in hundreds of different types of garments. Participants view the photos and evaluate how big or small the models’ backsides appear. The volunteer models are of varying sizes and shapes in order to collect findings that represent the greater population.