Queen put on hat to dance (5)
I believe the answer is:
caper
'dance' is the definition.
(I've seen this before)
'queen put on hat' is the wordplay.
'queen' becomes 'er' (abbreviation for Elizabeth Regina).
'put on' is a charade indicator (letters next to each other).
'hat' becomes 'cap' (I've seen this before**).
'er' put after 'cap' is 'CAPER'.
'to' acts as a link.
(Other definitions for caper that I've seen before include "illegal scheme" , "jump around?" , "Antic, prank" , "Cooked and pickled flower bud" , "The Italian Job, perhaps" .)