This came up in conversation in the day seat queue and it really got me thinking. We decided that you'd have to update the setting to something more contemporary but other than that you wouldn't have to change much. Here is my casting:

Mickey - Frances Barber or Siobhan Redmond

Baby - Cush Jumbo or Andrea Riseborough

Skinny - Laura Elphinstone or Sinead Matthews

Potts - Pippa Nixon or Michelle Terry

Sweets - Debbie Chazen