This is too big

这个太大拉

Do you have a bigger one?

你有更大的吗?

Do you have the same thing in any other colors?

你有其他颜色的这个东西吗?

Can I try this on?

我可以试穿吗?

Where is the fitting room?

换衣间在哪?

This is just my size.

这就是我的号

It doesn’t fit

这个不适合

This is too short (long/tight/loose)

太短拉(长/紧/松)

It’s too expensive for me

太贵拉

Can I have it in a cheaper price?

能便宜点吗?

Do you have anything else around 80 dollars?

你有大约80圆的东西吗?