Torment shapes pop star (5,6)

I believe the answer is:

harry styles

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'pop star' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.

'torment shapes' is the wordplay.
'torment' becomes 'harry' (I've seen this in another clue).
'shapes' becomes 'styles' (I can't explain this - if you can you should give a lot more credence to this answer).
'harry'+'styles'='HARRY STYLES'

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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