Queen enters church toilet with extremely unkempt hairstyle (7)
I believe the answer is:
crewcut
'hairstyle' is the definition.
(I've seen this before)
'queen enters church toilet with extremely unkempt' is the wordplay.
'queen' becomes 'r' (abbreviation for regina, e.g. in ER ).
'enters' means one lot of letters goes inside another.
'church' becomes 'CE' (abbreviation for Church of England).
'toilet with' becomes 'wc' (I can't justify this - if you can you should believe this answer much more).
'extremely' says to hollow out the word (remove centre letters) (only the extremes of the word are used).
'unkempt' with its middle removed is 'ut'.
'r' put within 'ce' is 'cre'.
'cre'+'wc'+'ut'='CREWCUT'
Can you help me to learn more?
(Another definition for crewcut that I've seen is " Closely cropped hairstyle".)