What was Elvis' final feature film role?

Elvis made 31 films between 1956 and 1969, and "Change of Habit" was his Hollywood swan song. The 1969 film paired Elvis with Mary Tyler Moore in a story about a doctor who falls for what he thinks is a regular nurse, not realizing she's actually an undercover nun (I don't get it either). For the first and only time in his career, Elvis got to play a professional man instead of another singing race car driver. Colonel Tom Parker even thought it had Oscar potential, but he famously told Elvis "Don't go buying no tuxedos" because he knew the Academy wouldn't take his client seriously. Elvis almost revived his acting career with a role in Barbra Streisand's "A Star Is Born," but Parker's outrageous demands killed the deal and the part went to Kris Kristofferson instead.