Kevin Allison of Ross Township reacts before the Cupid’s Undie Run on Saturday on the North Shore. The charity event benefits research for neurofibromatosis, a genetic disorder affecting one in 3,000 children. Swipe for more photos. (Photos by Steph Chambers/Post-Gazette) #Pittsburgh #PGH #412 #CupidsUndieRun #Undierun #running #5k #racing #PGPhotos