Fold sewn or pressed into cloth (5)
I believe the answer is:
pleat
'fold sewn or pressed into cloth' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for pleat that I've seen before include "Flat fold of cloth" , "Fold sewn or pressed into cloth" , "Gathering" , "Gather" , "that's tailor-made" .)