Amazon MGM has dropped the official trailer for the coming-of-age story comedy My Old Ass [MOLAS]. Maisy Stella stars as a teenager who takes mushroom on her 18th birthday and meets her 39-year-old self, played by Aubrey Plaza [APLAZ]. When her “old ass” begins to give her life advice, she begins to reevaluate her life. Written and directed by Megan Park, My Old Ass opens in select theaters on September 13th .