On a Saturday in February, high school senior Kaylee Lemmien sifted through racks of dresses at Tinker Tailor, a small shop in downtown Elk Rapids, a village of about 1,500 people in northern Michigan.

“I’d call this a mermaid, sequin, light blue gown with a tulle skirt. It’s got a lace-up back, kind of open,” Lemmien said. “Very pretty.”

Tinker Tailor usually alters clothes, but on this day it was selling them — prom dresses, to be exact. Gowns in a variety of shapes, sizes, and colors — short and long, neons and pastels, satin and sequins — lined the racks. The garments were donated and consigned by people around the region, with the goal of giving them a new life at the Elk Rapids High School prom in May. Called Sustainable Style, the secondhand shopping initiative takes aim at fast fashion.