如果要用英文表达“她真好看”的意思，可以使用以下表达：

"She is really good-looking."
"She is really beautiful."
"She is really attractive."
"She is really stunning."

这些表达均指女性长得漂亮、吸引人。

下面是一些例句及其中文翻译：

"She is really good-looking. I can't stop staring at her."
(她真好看。我看不起来。)
"She is really beautiful. She has the most gorgeous eyes I've ever seen."
(她真漂亮。她有我见过最漂亮的眼睛。)
"She is really attractive. She has a great figure and a great personapty."
(她真有魅力。她有一个很好的身材和一个很棒的个性。)
"She is really stunning. She always looks so elegant and put-together."
(她真惊艳。她总是看起来那么优雅和整洁。)