Design ultimately graceful clothes having turned up (6)
I believe the answer is:
argyle
'design' is the definition.
(I know that argyle is a type of design)
'ultimately graceful clothes having turned up' is the wordplay.
'clothes' says the answer is hidden in the clue (the letters clothe the hidden word).
'having turned up' says the letters should be written in reverse.
'elygra' can be found hidden inside 'ultimately graceful'.
'elygra' backwards is 'ARGYLE'.
(Other definitions for argyle that I've seen before include "Diamond-shaped knitting pattern" , "Design of diamond-shaped patterns - Plymouth ___, football team" , "Coloured diamond pattern on knitted garments" , "Knitted or woven with diamond-shaped pattern" , "Sock pattern" .)