They got hitched … again!

During Thursday’s Halloween episode of Grey’s Anatomy, Jo Wilson (Camilla Luddington) and Alex Karev (Justin Chambers) decided to tie the knot legally … in full Halloween costumes.

Last season, the duo realized they never mailed in their signed a marriage license (after their fairy boat wedding in season 14), and it had expired. Then going through a difficult time, Jo gave Alex “an out” as she signed herself into a psychiatric facility.