She's a ______ beauty.
My beauty is natural, hers is _________.
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The label plastic from plastic surgery can be used with a derogatory sense in this context:
plastic beauty noun 1. (uncountable) Beauty achieved by cosmetic surgery. 2. A person with such beauty. - wiktionary
My beauty is natural, hers is fake!
not genuine or real; being an imitation of the genuine article
An artificial thing is not real or not made of natural things but made to be like something that is real or natural (Longman Dictionary of Contemporary English). For example, you can say 'Her boobs are artificial, but mine are natural'.