Like the petite winner of the Miss Beer competition? (4-4)
I believe the answer is:
pint-size
'like the petite winner of the miss' is the definition.
I can't judge whether this definition defines the answer.
'beer competition?' is the wordplay.
'beer' becomes 'pint' (beer is typically served by the pint).
'competition?' becomes 'size' (I can't explain this - if you can you should give a lot more credence to this answer).
'pint'+'size'='PINT-SIZE'
Can you help me to learn more?
(Other definitions for pint-size that I've seen before include "Very small, like eighth of a gallon" , "Well below average height" .)