DOLLY PARTON gives ET a sneak peek of the world premiere of the stage version of her hit movie, 'Nine to Five,' on Monday's ET.

The 'Nine to Five' musical will open at the Ahmanson Theater in Los Angeles this fall and ET has the lowdown on the casting: MEGAN HILTY will play the role of Doralee Rhodes made famous by Dolly, ALLISON JANNEY is taking over from LILY TOMLIN as Violet Newstead, JANE FONDA's Judy Bernly will now be played by STEPHANIE J. BLOCK and the role of Franklin Hart Jr. (DABNEY COLEMAN) in the movie was been awarded to MARC KUDISCH.

Tune in Monday for more of Dolly on ET!