Dresses up to go in tails (5)

I believe the answer is:

spoon

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'dresses up to go in tails' is the definition.
I can't judge whether this defines the answer.

'dresses up to go in tails' is the wordplay.
'tails' suggests the final letters (I've seen 'tail' mean this).
The final letters of 'dresses up to go in' are 'SPOON'.

Can you help me to learn more?

(Other definitions for spoon that I've seen before include "SECOND PART OF 15" , "One for taking soup" , "Dining utensil" , "feeder" , "cooking utensil" .)

I've seen this clue in the Sydney Morning Herald.

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