Styles sitters left out (5)
I believe the answer is:
modes
'styles sitters' is the definition.
'modes' can be an answer for 'styles' (I have seen 'Styles of domes ' mean 'modes' so perhaps 'styles' could also mean 'modes'). I am unsure of the 'sitters' bit.
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for modes that I've seen before include "Ways - manners" , "Fashions" , "Styles of domes" , "Styles (in clothes, etc)" .)