Row about a pair of model-types being more tawdry (7)
I believe the answer is:
tattier
'more tawdry' is the definition.
Both the answer and definition are comparative adjectives. Perhaps you can see a link between them that I don't see?
'row about a pair of model-types' is the wordplay.
'row' becomes 'tier' (a tier is a row of things).
'about' says to put letters next to each other.
'a pair of model types' becomes 'tat' (I am not sure about this - if you are sure you should believe this answer much more).
'tier' after 'tat' is 'TATTIER'.
'being' acts as a link.
Can you help me to learn more?
(Another definition for tattier that I've seen is " More shabby".)