A proverb expressing the idea that beautiful people often have short lives or ill fortune; 'beauty and longevity seldom go together' (a traditional saying, not universally true).
昔から『美人薄命』と言われるが、それは一つの俗信にすぎない。
People have long said 'beauty dies young,' but that's just a folk belief.
映画のヒロインは美人薄命で、若くして亡くなる設定だった。
The film's heroine was portrayed as a beautiful person who dies young.
誰もが美人薄命を信じるわけではないが、悲劇的な美しさを表す表現だ。
Not everyone believes 'beauty dies young,' but it's an expression that conveys tragic beauty.