Oscars red carpet fashion: Emma Stone, Bradley Cooper and Margot Robbie turn on the style

Emma Stone (above) was among the best-dressed in a custom Louis Vuitton pale mint peplum gown. She was later named best actress for Poor Things.

Margot Robbie was controversially not nominated for her role in Barbie, but she was one of the fashion winners in a black sequined Versace gown.

Co-star Ryan Gosling brought some 'Kenergy' in a classic black outfit with sparkly silver trim.

In a nod to the preppy style of 1995 film Clueless, Billie Eilish's outfit included a Chanel tweed blazer, tall socks and heeled Mary Jane shoes. The singer won best song for her Barbie theme What Was I Made For?

America Ferrera wore a shimmering pink gown in a tribute to Barbie. Ferrera had a best supporting actress nomination for her role in the film.

Da'Vine Joy Randolph continued her ability to bring dramatic looks to red carpets this awards season, wearing a shimmering periwinkle dress with pom-pom sleeves and a long train. She went on to scoop the prize for best supporting actress.

Best actress nominee Lily Gladstone honoured her Native American heritage by wearing a collaboration between Gucci creative director Sabato De Sarno and Indigenous artist Joe Big Mountain.

Bradley Cooper, who was nominated for best actor for Maestro, wore a black suit without a tie but with turquoise buttons to add a modern twist. His mother Gloria was his date.

Cooper's Maestro co-star Carey Mulligan, who was up for best actress, oozed elegance in a black-and-white mermaid dress.

Jennifer Lawrence brought polka dots to the red carpet with a gorgeous Dior gown.

Dune star Zendaya chose a single-strapped striking rose Armani Privé dress with a metallic palm tree pattern.

Her Dune co-star Florence Pugh strode down the red carpet in a sculpted and beaded Del Core design.

Emily Blunt and husband John Krasinski had a matching cream look, with the best supporting actress nominee in a structured Schiaparelli gown with Superman-style underwear detailing.