“北京生，北京长”的英文地道说法？

be simon-pure(形容词)
例如：She is a simon-pure Beijinger.

地道的，正宗的；符合原话意思。(*^__^*)

I was born and have grown up in Beijing.

我感觉Beijinger挺好，模仿NBA湖人队lakers(lake+er),写文章的话，“Beijinger”即可，相信懂E文的都知道

indigenous Beijinger
是为"土生土长的北京人"

Beijing native

或者

native Beijinger