Matured making appearance in teenage dream (4)

I believe the answer is:

aged

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'matured making appearance' is the definition.
'aged' can be an answer for 'matured' ('age' can be a synonym of 'mature'). I am unsure of the 'making appearance' bit.

'in teenage dream' is the wordplay.
'in' says the answer is hidden in the clue.
'AGED' is hidden in the letters of 'teenage dream'.

Can you help me to learn more?

(Other definitions for aged that I've seen before include "Getting on" , "Got older" , "well over the hill" , "Senescent" , "Became older" .)

I've seen this clue in The Independent.

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