Coastal Granddaughter vs. Coastal Grandmother
The "grandmother" version of this aesthetic — the original — leaned literal: linen sets, woven hats, a whole Nancy Meyers kitchen of beige. Coastal Granddaughter is the younger, looser mutation. Same sandy palette and natural fabrics, but worn with a cropped tee, a slouchy bag, jeans under the sundress. It reads lived-in rather than staged.
The practical difference is proportion and styling. Grandmother is matchy and complete; granddaughter mixes one beachy piece into an otherwise normal outfit. A linen midi with sneakers and a tote is granddaughter. The full linen co-ord with espadrilles is grandmother. If your Pinterest board skews young and undone, you're almost certainly in the granddaughter lane.