Olivia Rodrigo shelved her signature slogan tanks and fishnet tights for a night of European glamour on Thursday. The 22-year-old made a surprise appearance at Venice Film Festival to support her boyfriend, actor Louis Partridge, at the premiere of his new TV series Disclaimer. The high octane event saw the singer grace the Italian City of Love in a true Nineties-inspired outfit.

Olivia slipped into Rodarte's 'Black Burnout Velvet Slip Gown With Silk Flower Pina' - a longline sheer dress, peppered with ebony blooms and finished with sleek spaghetti strap detailing. A co-ordinating floral rosette punctuated the scooped neckline of the ethereal piece, which heavily leaned into the red carpet style of the nostalgic era. Think Kate Moss’ iconically sheer slip dress, Tyra Banks’ 1994 silver-blue gown and Kate Hudson’s 1998 black see-through set.

Olivia wore her signature chocolate locks down loose in her go-to style while making a case for a natural, honied makeup look. A red lip tapped into old school Hollywood drama, while a flawless complexion and dusting of blush exuded feminine sensibilities. MORE: Olivia Rodrigo twirls in a semi-sheer corset dress and cowboy boots – fans say the same thing RELATED: Olivia Rodrigo delights fans in plunging metallic dress in mega style switch-up Louis joined his Grammy-winning girlfriend looking ever-so suave in a classic Seventies suit.

The black tailored set featured wide lapels and an oversized cut, layered over an off-white shirt c.