How do I solve 9 down in Daily Telegraph Cryptic 31265?

Question

Accepted Answer

9 down reads "Fashionable adolescent's two hats for Spooner" (5-6 letters); the answer is TEENY-BOPPER. It's a cryptic definition: the whole clue is a playful or punny description of the answer. No wordplay decomposition to do — read laterally and identify what's being described. The full step-by-step breakdown is on this page.

Fashionable adolescent's two hats for Spooner (5-6)

9D — Fashionable adolescent's two hats for Spooner (5-6) — TEENY-BOPPER