你们知道她是谁吗用英语怎么说

请提供更多关于"她"的上下文信息，以便我能回答问题。

英文：Do you know who she is?
中文翻译：你知道她是谁吗？
例句：

A: Do you know who she is?
B: No, I've never seen her before.
A: She is a famous actress.
B: Oh, do you know who she is?
A: Yes, she is Jennifer Lawrence.