also: キャンペンガール
poster girl; campaign girl
A young woman hired to promote a product, event, or campaign, often appearing in advertisements or at promotional events. Wasei-eigo; the English term 'campaign girl' is not used in the same way.
wasei-eigo (Japanese-coined English), from campaign girl
She appears in TV commercials as a poster girl for a beer brand.
Campaign girls were introducing new products at the trade show.