There are dresses that announce the season. And then there’s Opal Laine.

The Opal Laine Dress is a luminescent button-down dress, belted just so, with a rather extraordinary talent for catching the light. Somewhere between summer’s last shimmer and autumn’s first whisper, she makes the transition look positively enchanting.

Her secret? Weathercloth—a breathable, durable, wrinkle-resistant blend of 70% cotton and 30% polyester, cross-dyed in iridescent shades of purple and blue that shimmer with every change of light. Falling somewhere between midi and full length, this button-down beauty pairs a classic spread collar with a waist-defining self-tie belt and two front slits that give her plenty of room to move.

Pair with our Daria lavender-grey baroque pearl collection by Mela, Arcadio Italian Leather Bag in silver, and a pair of Carolina Herrera sunglasses like the Jillian. A little light, a little wanderlust—for an entirely intoxicating effect.