An emotional and flustered Stone began her speech by explaining that her mint green strapless gown had just ripped in the back.

“My dress is broken. I think it happened during ‘I’m Just Ken’. I’m pretty sure,” she joked, referring to Ryan Gosling’s campy performance at the ceremony of the Oscar-nominated song from “Barbie”.

“This is really overwhelming. My voice is also a little gone. Whatever,” she said.

The 35-year-old actress scored her first Oscar for 2016 musical “La La Land”.

In the Frankenstein-inspired “Poor Things”, Stone plays Bella Baxter, a woman who is reanimated after suicide by a mad scientist (Willem Dafoe).

The movie chronicles Bella’s dramatic self-discovery and liberation – much of it through sex – first with a flamboyant lawyer played by Mark Ruffalo, then with a succession of clients in a Paris brothel. Bella grows increasingly independent as she journeys through a surreal version of 19th-century Europe.

Stone has said the role was her favourite of her career, and that she admired Bella’s curiosity as well as her appreciation for the good and the bad.

With this win, Stone beat out fellow nominees Annette Bening, Lily Gladstone, Sandra Hüller and Carey Mulligan.

In “La La Land”, she sang and danced in her role as a struggling actress opposite Ryan Gosling in a movie that celebrated old Hollywood.

She also was nominated for best supporting actress for 2014 film “Birdman” and 2018 drama “The Favourite”.

Known for her red hair and wide eyes, Stone had a breakthrough role in 2007’s raunchy comedy “Superbad”. She also has starred in “The Help” and “The Amazing Spider-Man”.