Coastal grandmother is a relaxed, elegant coastal aesthetic drawn from Nancy Meyers films, built on linen, neutrals, and sophisticated ease, and coined on TikTok in 2022 around aspirational aging and refined simplicity. Linen trousers form the base. Striped Breton tops go above them. Cashmere sweaters get tied over the shoulders. Woven tote bags and loafers complete it, with simple pearl or gold jewelry.