Is it cruel to make your pet wear clothes?

I don't like it personally, I think it makes them look ridiculous and is often uncomfortable for them. My dogs would curl up in a blanket by their own choice if they were cold. They would always try and squirm out of any clothes my sister would try and put on them. I don't blame them as it was probably tight and restricted their movement.

I did hear that there was some sort of comfort blanket sweater thing you could put on dogs to calm them down during storms though - not sure how effective it was though.