Soul singer Thomas (5)
'soul singer thomas' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for irma that I've seen before include "- La Douce, nineteen sixty three Billy Wilder film" , "1963 film with Lemmon and Maclaine" , "woman" , "Lady" , "The girl for Irish music award" .)
(Another definition for carla that I've seen is " Name of woman".)