'Do You Know' is the title of Jessica Simpson's highly-anticipated country debut, and its title track just may be the sexiest song on the album.

"I feel your face against my shoulder, breath upon my skin / Embers barely smoldered, I make love to you again," the pop turned country star sings in the first verse. And believe it or not, those lyrics were written by none other than Dolly Parton, who also provides background vocals on the song. Simpson tells The Boot it was a recording session full of laughter.

"After she sang her part on the song, she looked into my dad's video camera and said, 'Well, Jessica sang her butt off. I sang my butt off. So now we're two blondes with no asses!" Simpson told us, laughing.

Simpson also gushed that Parton is "the most humble person" she's ever met and that the icon was a big influence in her decision to crossover to country. The Boot will have more of our exclusive interview with Jessica Simpson next week.

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