Flowing capes provide elbow room! (5)
I believe the answer is:
space
'elbow room' is the definition.
(I've seen this in another clue)
'flowing capes' is the wordplay.
'flowing' indicates an anagram.
'capes' anagrammed gives 'SPACE'.
'provide' is the link.
(Other definitions for space that I've seen before include ""The final frontier"" , "Interstellar region" , "-- Capsule; -- bar" , "Expanse" , "A particular area for paces" .)