All Things Go DC returns to Merriweather Post Pavillion this September for its 12th year. Last week it was announced that Hayley Williams ("the Hayley Williams Show") and Mitski would headline the three-day festival, and today the full lineup has been revealed, with notable inclusions like Ethel Cain, Zara Larsson, and Slayyyter. All Things Go's Friday lineup will also have Magdalena Bay, Rico Nasty, Ninajirachi, and comedian Robby Hoffman. Saturday features Muna, Zara Larsson, She & Him, the Beths, Hemlocke Springs, and Grace Ives, while Sunday wraps things up with artists like Lola Young (after enduring a health scare during her set last year), Tinashe, Father John Misty, Wolf Alice, and CMAT. See the full DC lineup below.…