The Promising Young Woman star, nominated for Best Actress in a Motion Picture - Drama, wowed in a satin pale pink draped dress by Prada. The off-the-shoulder custom gown was paired with Cartier earrings and rings.
For glam, Mulligan styled her blonde hair down with a natural-looking makeup look, featuring subtle pops of soft pink using Sisley Paris blush and eyeshadow, inspired by the pale rose pink shade of her dress. Her makeup artist, Emma White Turle shared a close-up photo of the British actress' beauty look.
"I felt it was, you know, it was a surface read, it was a sort of criticism or an appraisal of my looks as opposed to my performance," Mulligan told ET's Matt Cohen. "It wasn’t a sort of big thing, it wasn't something that felt very dramatic in the writing of it, but I think it's important. I think it's those everyday things that build up and create a bigger picture. And I think the effect -- the way that we treat women onscreen -- and I think the way that we learned so much from what we see onscreen, I think it's so much of our culture, so much of the way that we treat each other."
Mulligan noted that especially due to the film's subject matter, which deals with sexual assault and the double standards between men and women, she felt it was important to speak out.