Fancy sort about to choose new decorations (9)
I believe the answer is:
ornaments
'decorations' is the definition.
('ornament' can be a synonym of 'decoration')
'fancy sort about to choose new' is the wordplay.
'fancy' indicates an anagram.
'about' means one lot of letters goes inside another.
'to choose' becomes 'name' (I am not sure about this - if you are sure you should believe this answer much more).
'new' becomes 'n'.
'sort' anagrammed gives 'orts'.
'name'+'n'='namen'
'orts' enclosing 'namen' is 'ORNAMENTS'.
Can you help me to learn more?
(Other definitions for ornaments that I've seen before include "Trinkets" , "Adornments, decorations" , "Tree embellishments" , "Decorates" , "Tree baubles" .)