Two of my favorites........
No Irene Dunne? HERESY!
I don't think Irene Dunne ever appeared in Irene, hence her non-inclusion!
More of a duel that you think...perhaps. Irene Ryan had created the role of the feisty grandmother in the musical PIPPIN, and stopped the show with her featured number "No Time At All". She died during the run, but I don't know if she was still there when Debbie Reynolds opened in the revival of IRENE.Paul