Ariana Grande is using the The Wicked: For Good press tour to teach a lesson in unexpected vintage fashion sourcing. Last night in London, the actor continued her streak of surprising archival grails with a pair of decades-old looks that departed from the traditional, ultra-feminine Glinda pink.

Stepping out with Cynthia Erivo and the rest of the yellow brick gang, Grande slipped into a dramatic black ball gown from 1952. Designed by Gilbert Adrian, it featured an asymmetric shoulder strap, glittering sequins and pailettes, and a tiered bubble skirt. Grande and her stylist Law Roach sourced the dress, which they paired with a Swarovski necklace and simple hair and makeup, from Lily et Cie .

While others scour runway collections from the past to select their vintage wares, Adrian has

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