The stars turned heads in Chanel at a dinner held by the French fashion brand in collaboration with film producer Charles Finch in Beverly Hills.
Ora, 32, looked stylish as she made a statement in a see-through, high-necked black top with a black bra on display beneath.
She finished off her stylish ensemble with a black blazer jacket thrown over her shoulders, wide-leg black leather trousers and a slick of red lipstick.
Similarly, Lily James exuded elegance in a strappy black mididress with lace detailing on the top half and a grey floral pattern on the skirt.
The actor, 33, kept the rest of her outfit simple, with a pair of gold earrings and a pair of plain black heels.
Meanwhile, Camila Morrone took a slightly different approach and paired a black bandeau top with a sheer black skirt and a monogrammed black leather belt.
The model, 25, finished off her look with a pair of strappy black heels and a sparkly black clutch bag.
Others in attendance at the star-studded event included actresses Nicole Kidman and Kristen Stewart who both posed on the red carpet in tweed ensembles.
The LA gathering came one evening ahead of the 95th Academy Awards which took place on Sunday evening.
As usual, the ceremony took place at the Dolby Theatre in Hollywood and this year was hosted by Jimmy Kimmel.
Everything Everywhere All At Once was the big winner of the night, including taking the gong for Best Picture, Best Actress for Michelle Yeoh, Best Supporting Actress for Jamie Lee Curtis and Best Supporting Actor for Ke Huy Quan.
Watch: The Oscars will not have a red carpet for the first time since 1961