What’s new in clothes? Item with arms joined together (5)
I believe the answer is:
tongs
'item with arms joined together' is the definition.
(tool with two arms)
'what's new in clothes?' is the wordplay.
'what's new' becomes 'n' (common abbreviation eg NT for New Testament).
'in' is an insertion indicator.
'clothes?' becomes 'togs' (togs can informally mean clothing).
'n' inserted inside 'togs' is 'TONGS'.
(Other definitions for tongs that I've seen before include "Device for curling hair" , "Grasping tool; Chinese secret societies" , "Sugar-cube grabbers" , "Sugar handlers" , "Chinese gangs" .)