Davies and Redknapp – who featured in stage show Cabaret with Will Young last year – will be joined by stage actress Natalie McQueen and comedian Brian Conley.
And in case you’re wondering what they’ll look like on stage, the four appeared in a short trailer featuring Parton herself. But prepare yourself before watching: it features some seriously cheesy singing on London streets and some unconvincing dubbing.
The 9 to 5 musical is based on the 1980 film of the same name, in which three office workmates team up to try and overcome their sexist and egotistical boss. It was originally produced on Broadway in 2009 and features the songs 9 to 5, Backwoods Barbie and Get Out and Stay Out.
9 to 5 The Musical will run at the Savoy Theatre from 28th January to 31st August 2019. You can get tickets here.