VIDEO: Michelle Williams Thanks Daughter

For her devastating portrayal of Marilyn Monroe in My Week With Marilyn, Michelle Williams, 31, won Best Actress In a Motion Picture Comedy or Musical at the 69th Annual Golden Globe Awards, held Sunday in Los Angeles. Williams, whose first win came after three nominations (she also got nods for Brokeback Mountain and Blue Valentine, in 2006 and 2011, respectively), gave the most heartfelt acceptance speech of the night, choosing to thank first and foremost her daughter, Matilda.

"I consider myself a mother first and an actress second, and so the person I most want to thank is my daughter, my little girl, whose bravery and exuberance is the example that I take with me in my work and in my life," Williams said, after beating out fellow nominees Charlize Theron and Kate Winslet for the honor. "I want to say thank you for sending me off to this job every day with a hug and a kiss. I couldn't have done it any other way."

Matilda, 6, is Williams' daughter with late actor Heath Ledger, who died tragically of an accidental overdose in January 2008.

Watch the video of Williams' speech here:

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