No One Saw This Coming From Amber Heard

Michelle Williams Says She Became 'Needy' Playing Marilyn Monroe

11/8/2011 1:24pm EST

Michelle WilliamsActress Michelle Williams struggled to switch off from playing Marilyn Monroe in a new movie and became "needier" as she portrayed the screen icon.

The Brokeback Mountain star plays the blonde bombshell in upcoming biopic My Week With Marilyn and immersed herself in playing the star.

However, her dedication to the role had its drawbacks, and Williams admits the part affected her mentally.

She tells Britain's Elle magazine, "Sometimes you don't (switch off). Especially with Marilyn, you don't want to. In some ways I feel like she's part of me, and in some ways I feel like she's an old friend, and in some ways it feels like a crime to abandon her.

"She was someone who so needed people and was always being abandoned. I found that, playing Marilyn, I became a lot needier than I actually am as a person. I needed quite a lot from people. An embarrassing amount."

My Week With Marilyn

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Photo Credits: PR Photos , The Weinstein Company Inc