In this May 29, 2015 photo provided by Jennifer Goodwin, Catherine Malatesta, center, poses with Lauren Hourican, left, and Molly Mahoney, right, before the junior prom at Arlington High School in Arlington, Mass. After Catherine died from a rare cancer on Aug. 2, 2015, some of Catherine’s friends, including Lauren, decided to wear her gown to their own proms in 2016 in Catherine’s honor. (Jennifer Goodwin via AP)