Rodrigo Shines at Lollapalooza in a Vintage Balenciaga Minidress

Olivia Rodrigo joined The Smashing Pumpkins onstage at Lollapalooza in Chicago for a duet on 'Thirty-Three,' wearing a semi-sheer Balenciaga Spring/Summer 2006 minidress layered over white shorts, knee-high socks and platform Mary Janes, with her hair braided into a halo crown, delivering a memorable vintage-fashion moment at the festival.