Crossword Genius

In taking the dog out, she doesn't wrap up warm (3-2)

Ross

I believe the answer is:

pin-up

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

'out she doesn't wrap up warm' is the definition.
I can't judge whether this defines the answer.

'in taking the dog' is the wordplay.
I cannot quite understand how this works, but
'in' is present in the answer.
'dog' could be 'pup' (I have seen 'Young dog ' mean 'pup' so perhaps 'dog' could also mean 'pup') and 'pup' is found within the leftover letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for pin-up that I've seen before include "picture of heart-throb?" , "Photographer's model" , "Poster of an attractive person" , "(Picture of) sexually attractive person" , "Sexy model" .)

I've seen this clue in the Evening Standard.
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