Reveal truth about former model (6)

I believe the answer is:

expose

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'reveal truth' is the definition.
'expose' can be an answer for 'reveal' (exposing is a kind of revealing). I am not certain of the 'truth' bit.

'former model' is the wordplay.
'former' becomes 'ex' (prefix meaning former or onetime).
'model' becomes 'pose' (model can mean to pose).
'ex'+'pose'='EXPOSE'

'about' acts as a link.

Can you help me to learn more?

(Other definitions for expose that I've seen before include "hazard" , "Abandon" , "Show up" , "Lay out to view" , "Make visible or obvious" .)

I've seen this clue in The Times.

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