Post Malone surprised shoppers at a Walmart in Ames, Iowa, ahead of his concert at Iowa State's Jack Trice Stadium. Fans spotted his distinctive tattoos and confirmed his identity. The rapper posed for pictures with excited shoppers and workers in the store. The concert, featuring Post Malone and Jelly Roll, is scheduled to start at 7 p.m. with gates opening at 6 p.m. Tickets are still available for the event.