Watch Michelle Williams as Marilyn Monroe Sing "Heatwave"

By:OK! Staff

Nov. 4 2011, Published 7:49 a.m. ET

The more teasers we see of Michelle Williams as Marilyn Monroe, the more we love her in the role!

In the clip below, the actress performs "Heatwave" as Marilyn from the the hotly anticipated upcoming biopic, My Week With Marilyn, hitting theaters Nov. 23.

OK! NEWS: MICHELLE WILLIAMS DISHES ABOUT "DAUNTING" MARILYN MONROE ROLE

My Week With Marilyn tells the story of filmmaker Colin Clark's (Eddie Redmayne) one week in the summer of 1956 when he was 23 years old and met Marilyn, Coming Soon reports.

Article continues below advertisement

“As soon as I said yes to the role, I spent the next six months trying to talk myself out of it because it was just so daunting," Michelle told Ellen DeGeneres recently on her talk show. "I was never really a very good student. I didn’t go to school for a terribly long time. I think I’m making up for it now. I worked so hard. I read all the books. I watched the movies. I was obsessed with her. I woke up with her every morning, and I went to bed with her every night, in a way.”