The 27-year-old looked stunning in a halter maroon gown with an A-line bottom as she tended to her pretty blonde friend at the splashy nuptials in Martha's Vineyard, a Massachusetts island that sits in the Atlantic Ocean just south of Cape Cod.
The pop star - who just released her revenge song Look What You Made Me Do earlier this week - seemed to keep her head down as she stayed behind the bride while they walked into a church.
Taylor wore her medium-length blonde hair down and in soft curls. She also had long bangs and matched her wine-colored lip to match her floor-length dress and had on flattering dark eye makeup.
