Drama queen refers to people (mostly girls - but boys play their part) who turn something unimportant into a major deal, or who blow things way out of proportion whenever the chance is given because they either: a) want to seek attention; b) have some emotional dysfunction and it’s their duty to make life harder for everyone around them; c) just simply can’t get over it.

Drama queen(字面意思為“戲劇女王”)指那些(多為女性，不過也不排除男性)喜歡小題大做，一有機會就興風作浪、夸大事態的人。他們這樣做的原因有：想獲得關注;情緒失控，就想鬧得周圍的人不得安寧;或者就是習慣這樣，改不了。

由此，我們可以把drama queen譯作“沒事兒找事兒的人”或者“事兒媽”。

For example:

Mary blows everything out of proportion! She’s such a drama queen!

瑪麗每件事情都小題大做!真是個事兒媽!