The singer, whose TRAVELIN' THRU' tune from hit film TRANSAMERICA is nominated in the Achievement In Music Written For Motion Pictures category, had hoped to take her husband, but ultra-private Dean will not be joining her.
Parton says, "My date's gonna be DUNCAN TUCKER, the writer/director of Transamerica, because he's just such a wonderful guy and he'll make a good escort.
"My husband wouldn't go anyway, so I'd either have to find somebody else's husband or take Duncan."
And Parton insists she isn't going to let her husband's anti-social behaviour upset her big night.
She adds, "I'm gonna walk the red carpet and do all that stuff and get a chance to see some of those big movie stars I've always wanted to meet. I'm gonna make a night of it."