New Escort model is a tight fit! (6)

I believe the answer is:

corset

I'm a little stuck... Click here to teach me more about this clue!

'model is a tight fit' is the definition.
I can't tell whether this defines the answer.

'new escort' is the wordplay.
'new' indicates anagramming the letters.
'escort' anagrammed gives 'CORSET'.

Can you help me to learn more?

(Other definitions for corset that I've seen before include "Tight-fitting ladies' garment" , "Stays" , "Restraining undergarment" , "Item of underwear" , "fat controller?" .)

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