Designs Prada top and bottom with model birds (8)
I believe the answer is:
patterns
'designs' is the definition.
('pattern' can be a synonym of 'design')
'prada top and bottom with model birds' is the wordplay.
'top and bottom' says to hollow out the word (remove centre letters) (only the top and bottom letters are used).
'with' is a charade indicator (letters next to each other).
'model' becomes 't' (Ford Model T car).
'birds' becomes 'terns' (tern is a kind of bird**).
'prada' with its middle taken out is 'pa'.
'pa'+'t'+'terns'='PATTERNS'
(Other definitions for patterns that I've seen before include "Designs, shapes" , "'Models, blueprints (8)'" , "Repeated decorative designs" , "Guides for making something" , "Models for making things" .)