I have seen a lot of people using multiple different when only different or multiple would have conveyed the meaning just as well. Is this correct usage? I know that sometimes doubling the words is used for more emphasis but I am seeing this used a lot more frequently than I thought.
We have multiple different sizes to choose from.
We have different sizes to choose from.
We have multiple sizes to choose from.
If this is correct, is this something I just miss in school or is this a newer addition to the language? (My first language is not English, as you can probably tell from my post.)