The word 'clothes' in English is an uncountable noun; it never changes. It is always written in the plural.
Meaning: things you wear
Pronunciation: /kləʊðz
Examples of usage:
- I've bought some new clothes.
- Put some clothes on.
- I'm going to put my clothes in the wash/I'm going to wash my clothes.
You cannot say: 'I have a clothes.'
In the singular we can say: 'an item of clothing'.