Her performance won over Kathy Bates (Richard Jewell), Scarlett Johansson (Jojo Rabbit), Florence Pugh (Little Women) and Margot Robbie (Bombshell).
Ahead of Oscars night, here's how history, maths and spreadsheets can help you work out exactly who's going to win.
Here's who'll compete for the 92 Academy Awards in February.
The Oscars are only a few weeks away, but which films do you need to see before Hollywood's sparkliest awards show?
We predict a big night for Scorsese, Tarantino and 'Fleabag'.
Netflix’s Marriage Story leads the way, followed by The Irishman and Once Upon a Time In Hollywood.