Officiating priest sporting new bracelet (9)
I believe the answer is:
celebrant
'officiating priest' is the definition.
(priest performing a rite)
'sporting new bracelet' is the wordplay.
'sporting' is an anagram indicator.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'n'+'bracelet'='nbracelet'
'nbracelet' with letters rearranged gives 'CELEBRANT'.
(Other definitions for celebrant that I've seen before include "An officiating priest, especially at Eucharist" , "person performing rite" , "One performing a rite" .)