你的头发很长啊！

Nǐ de tóufa hěn cháng a!

Your hair is so long!

我很久没剪头发了。

Wǒ hěnjiǔ méi jiǎn tóufa le.

I haven't had my hair cut in a very long time.

我喜欢你短头发的样子。

Wǒ xǐhuān nǐ duǎn tóufa de yàngzi.

I like your short hairstyle.