Demi Moore, Timothee Chalamet, Ariana Grande, Zoe Saldana and Kieran Culkin were among the A-list nominees who walked the carpet ahead of the ceremony - which saw Anora crowned the night's big winner, with five awards.
Here are some of the best looks of the night.
Image:Here's your first best actress nominee... Wicked's Cynthia Erivo in a stunning velvet green gown. Pic: AP
Image:Along with her signature nails, surely Erivo has broken records for the amount of earrings in one ear. Pic: Reuters
Image:Mikey Madison - who later won the best actress award for her performance in Anora. Pic: AP
Image:One word for best actress nominee Demi Moore... SLAY. Pic: AP
Image:Best supporting actress nominee Ariana Grande arrived in a flawless ballerina ball gown. Pic: AP
Image:Conclave actress Isabella Rossellini beams in blue velvet. Pic: AP
Image:Zoe Saldana, who later picked up the award for best supporting actress. Pic: AP
Image:Another triumphant figure-hugging gown worn by best supporting actress nominee Selena Gomez. Pic: AP
Image:Best supporting actor winner Kieran Culkin with his wife Jazz Charton. Pic: AP
Image:Jeremy Strong was up for best supporting actor for The Apprentice. Pic: AP
Image:Miley Cyrus in a black gown with matching lace gloves. Pic: AP
Image:British singer-songwriter Raye, a vision in red. Pic: AP
Image:Margaret Qualley, Moore's co-star in The Substance. Pic: Reuters
Image:A Complete Unknown actress Elle Fanning keeps it classic in a white gown with black bow. Pic: AP
Image:First time Oscars host Conan O'Brien with his wife Liza Powel O'Brien. Pic: AP
Image:Doja Cat is looking and feline fantastic. Pic: AP
Image:Lisa from Black Pink was among the night's performers. Pic: AP
Image:Queen Latifah was among the performers. Pic: AP