Young woman in regalia (3)

I believe the answer is:

gal

'young woman' is the definition.
(synonyms)

'in regalia' is the wordplay.
'in' indicates a hidden word.
'GAL' is hidden within 'regalia'.

(Other definitions for gal that I've seen before include "measure of acceleration?" , "Young woman (colloq.)" , "Girl from American west" , "Lady" , "US female" .)

I've seen this clue in The Mirror.

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