All clues are items of clothing/accessories worn on the body in general......
No. 3. Tiny cut of underbelly beef. (4/5)
No. 5. Idle dropout workers. (7)
No. 9. Mislaid by three little ones. (7)
No. 10. Ibis's,Herons, Terns for instance. (6)
No. 16. Reduce wild animals in masses. (8)
No. 17. Move to express doubt (5)