Model performed twirl in style briefly (11)
I believe the answer is:
transiently
'briefly' is the definition.
(thesaurus)
'model performed twirl in style' is the wordplay.
'model' becomes 't' (Ford Model T car).
'performed' becomes 'ran' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'twirl' is an anagram indicator (I've seen 'twirling' mean this).
'in'+'style'='instyle'
'instyle' with letters rearranged gives 'siently'.
't'+'ran'+'siently'='TRANSIENTLY'
Can you help me to learn more?
(Other definitions for transiently that I've seen before include "for a short time" , "Ephemerally" .)