Kalia Motley is a part-time pin-up model also known as Bang Bang Von Loola. She's feature in the documentary "Pin Up! The Movie."

(Hart Van Denburg/CPR News)

When  you hear the words pin-up girl, you most likely think back to the 1940s and '50s. Images of voluptuous women taped to soldiers' lockers or painted on the sides of planes. Well, pin-ups aren't just a thing of the past. Longmont filmmaker Kathleen Ryan documents a growing subculture among Colorado women in her new film "Pin Up! The Movie." Ryan and part-time pin-up model Kalia Motley of Fort Collins spoke to Colorado Matters host Nathan Heffel.