Selection from Italian designer's range (5)
I believe the answer is:
andes
'range' is the definition.
(South American mountain range)
'selection from italian designer's' is the wordplay.
'selection' says the answer is hidden in the clue (I've seen 'selection of' mean this).
'ANDES' is hidden within 'from italian designers'.
(Other definitions for andes that I've seen before include "A geographical feature" , "Great mountains of western S America" , "Danes seen in mountains" , "Mounts" , "The range of llamas?" .)