Sample of children's emblemed outfit (8)
I believe the answer is:
ensemble
'outfit' is the definition.
(I know that ensemble is a type of outfit)
'sample of children's emblemed' is the wordplay.
'sample of' indicates the answer is hidden within the clue (an extract or sample of the clue).
'ENSEMBLE' can be found hidden inside 'childrens emblemed'.
(Other definitions for ensemble that I've seen before include "Groups of musicians form a complete outfit" , "Group of musicians or co-ordinated clothes" , "Company of players" , "Group of musicians provide a full outfit" , "Musical company" .)