Congratulations are in order for Patricia Arquette and Julianne Moore!

At last night's BAFTA Awards, the 'Boyhood' star, 46, took home the Best Supporting Actress honor while Julianne, 54, won the coveted Best Actress accolade for her role in 'Still Alice.'

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Patricia at the BAFTAs on Feb. 8, 2015.

Patricia — who played a struggling single mom in 'Boyhood' — beat out other A-list actresses including Emma Stone ('Birdman'), Imelda Staunton ('Pride'), Keira Knightley ('The Imitation Game') and Rene Russo ('Nightcrawler') at the annual British Academy of Film and Television Arts Awards show in London.

"Thank you so much my incredible fellow nominees it's such an honor to be nominated with you," she said in her speech.

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Patricia in 'Boyhood.' (Photo Credit: R/R)</center)

Julianne similarly thanked her fellow Best Actress nominees Rosamund Pike ('Gone Girl'), Amy Adams ('Big Eyes'), Felicity Jones ('The Theory of Everything') and Reese Witherspoon ('Wild') upon accepting her award for 'Still Alice.'

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Julianne at the BAFTAs on Feb. 8, 2015.

"Thank you for including me among these beautiful performances both British — Felicity, Rosamund — and American — Amy and Reese — I'm honored to be honored with you tonight," she said.

Related Story: Julianne Moore On the Real-Life Inspiration For Her Role in 'Still Alice'

"To the five Scottish women who poured love into me — my great-aunts May, Mary and Cissy, my grandmother Flora and my mother Anne — this is for you," she continued.

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R/R

Julianne in 'Still Alice.'

In the film, the mom-of-two portrays a professor dealing with the onset of Alzheimer's disease.

Both Patricia and Julianne have previously won the Golden Globe, Screen Actors Guild and Critics' Choice awards and are frontrunners to win the Academy Award for their respective roles.