Is this correct, I want a size 2?
I want to know some expressions used when shopping.

So are these correct, 'What size do you want? I need a size 2/ a size S.'

Thank you!

Question

Is this correct, I want a size 2?
I want to know some expressions used when shopping.

So are these correct, 'What size do you want? I need a size 2/ a size S.'

Thank you!

Answer

You have a choice of verbs: want, need, wear, take, as in "I wear a size two."