Crossword Genius

How stupid supermodel might describe life's vicissitudes (5,3,4)

Ross

I believe the answer is:

thick and thin

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

'supermodel might describe life's vicissitudes' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'how stupid' is the wordplay.
I cannot quite understand how this works, but
'stupid' could be 'thick' (similar in meaning) and 'thick' is present in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

I've seen this clue in The Irish Times.
Want a hint initially instead of a full solution? Install my app