She's known as a party-girl who can be spotted at the hottest clubs in town almost every night.

party-girl 是由 party（派对）和 girl（女孩）组成的复合名词，中间用连字符连接。party 指社交聚会或娱乐活动，girl 指年轻女性。party-girl 指经常参加派对、喜欢夜生活的年轻女性。