Hours after making an understatedly elegant appearance at the 96th Academy Awards, Margot Robbie put her party pants on—or rather, took them off—for the after-party Sunday night.

Working with stylist Andrew Mukamal, the Barbie star and producer showed up to Vanity Fair’s annual Oscars after-party in a glorious gold corset from Thierry Mugler’s Spring/Summer 1996 collection. The gilded vintage piece was studded with a waterfall of bedazzled jewels and sequins, with the hem lined with beaded fringe.