她是个高个子女孩用英文怎么说

"She is a tall girl"是用英语表达“她是个高个子女孩”的正确说法。

来源：
“tall” 是英语中表示“高”的形容词，在这里描述女孩的身高。

例句：

She is tall for her age. (她的身高跟她的年龄相符)
He's not as tall as his brother. (他没有哥哥高)
She's one of the tallest girls in her class. (她是她班里最高的女孩之一)