Getty ImagesIf the Oscars gave out an award for best dressed, it would be the most hotly contested prize of the night.
Hollywood's biggest stars are turning on the style as they walk the red carpet for the glittering ceremony in Los Angeles on Sunday.
They included One Battle After Another's Chase Infiniti (below), who has announced herself as both a major actress and a fashion icon this year, and who wore a lavender custom Louis Vuitton gown.
Getty ImagesRose Byrne, nominated for If I Had Legs I'd Kick You, wore a black custom Dior dress embroidered with an intricate floral pattern.
Getty ImagesBest actress favourite Jessie Buckley capped off an awards campaign for the ages in red and pink - a change from her usually subdued colour palette.
Getty ImagesBritish actress Wunmi Mosaku, nominated for best supporting actress for Sinners, cradled her baby bump in a glittering gown with a cut-out shoulder.
Getty ImagesNorwegian actress Renate Reinsve, nominated for Sentimental Value, has favoured Louis Vuitton throughout her awards season campaign. For the Oscars, she wore a simple yet striking custom red Louis Vuitton dress by Nicolas Ghesquiere.
Getty ImagesDemi Moore, last year nominated for her daring comeback role in The Substance, returned and went full-on in feathers in a Gucci creation.
Getty ImagesKate Hudson, who is nominated for best actress for Song Sung Blue, arrived with her mum Goldie Hawn - 56 years after she won an Oscar for Cactus Flower.
Getty ImagesSuccession star Kieran Culkin is no stranger to awards season, having swept the supporting actor category last year for his performance in A Real Pain. He returns to the Oscars this year as one of the category presenters.
Getty ImagesSinners star Li Jun Li turned heads in a sleek swirled Gaurav Gupta creation.
Getty ImagesMarty Supreme star Odessa A'zion walked the red carpet wearing an embellished black gown.
Getty ImagesNorwegian actress Inga Ibsdotter Lilleaas is one of four stars from emotive family drama Sentimental Value to be Oscar-nominated.
Getty ImagesHer co-star and fellow nominee Elle Fanning wore a white princess gown by Givenchy.
Getty ImagesThe stars behind the KPop Demon Hunters music - Rei Ami, Ejae, and Audrey Nuna – walked the red carpet to warm up for their performance of their mega-hit Golden during the ceremony.
Getty ImagesF1 star Damson Idris looked smart in an ink blue overcoat with furry lapels and a jewelled brooch.
Getty ImagesBrazilian actor Wagner Moura, best known for Netflix drug drama Narcos, is nominated for his role in political thriller The Secret Agent.
Getty ImagesDirector Spike Lee, with wife Tonya Lewis Lee, showed his distinctive style with a suit featuring a purple fedora hat and matching bow tie, and a bag made of silver cassettes.
Getty ImagesBella Thorne decided to go with a black feathered cuffs and a sheer slip.
Getty ImagesHamnet author Maggie O'Farrell, who is nominated for co-writing the screenplay for the film adaptation, opted for a bubblegum pink gown with black lace gloves and mesh fascinator hat.
Getty ImagesBallet star Misty Copeland's monochrome outfit featured a playful tutu. She will dance on stage at the ceremony during the performance of the nominated song from Sinners.
Getty ImagesBritish actress Felicity Jones, who is in best picture nominee Train Dreams, picked pale yellow Prada.
Getty ImagesHudson Williams may not have been nominated at the Oscars, but he has been one of the most notable breakthrough actors of the past year, thanks to his role in TV series Heated Rivalry - the viral hit about two ice hockey players who fall in love.
Getty ImagesFashion star Heidi Klum was among the other stars walking the red carpet.
Getty ImagesSongwriter Diane Warren, who is nominated for best original song and is hoping for 17th time lucky at the Oscars, wore an elegant satin suit topped off with a black neck bow.
Getty ImagesAmelia Dimoldenberg, who has returned to the Academy Awards as red carpet reporter and social media ambassador for the third year in a row, wore a sculptural black Ralph Lauren column gown, Jimmy Choo shoes and Bvlgari jewellery.
ReutersBy Ian Youngs, Steven McIntosh, Scarlett Harris and Lucy Talavera.