The quality or state of being glamorous; the degree to which something possesses glamour or attractive sophistication.
From 'glamorous' plus the abstract noun-forming suffix '-ness,' which creates nouns from adjectives describing the quality or state of the adjective's meaning.
The 'glamorousness' of old Hollywood was built partly on mystery—movie studios carefully controlled what the public knew about stars, making their glamor seem mysterious and unreachable, which only increased the allure!
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