1963 Shirley MacLaine role (4)
I believe the answer is:
'1963 shirley maclaine role' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for irma that I've seen before include "woman" , "The girl for Irish music award" , "- La Douce, nineteen sixty three Billy Wilder film" , "- la Douce (1963 film)" , "1963 film with Lemmon and Maclaine" .)