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The world got to hear Oscar-winning actress Reese Witherspoon's voice when she played June Carter Cash in Walk The Line, but seven years later, she may hit the recording studio once again ... this time with Michael Buble!

Witherspoon, who said playing Cash was "the most challenging, horrifying experience of [her] life," is now in talks to sing a duet with Buble, according to Us Weekly.

Reese just gave birth last month to her third child, Tennessee James. We can't wait to hear what these two come up with in the studio!