Movie star reads Metamorphosis and hams it up (14)

I believe the answer is:

overdramatises

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'hams it up' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'movie star reads metamorphosis' is the wordplay.
'metamorphosis' indicates anagramming the letters.
'movie'+'star'+'reads'='moviestarreads'
'moviestarreads' is an anagram of 'OVERDRAMATISES'.

'and' is the link.

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I've seen this clue in The Times.

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