My opinion is that putting clothes on cats, unless it is a sweater for necessary warmth, is a needless, mean and foolish way to satisfy a human's vanity over his or her cat.
Not only that, it can be dangerous if the cat is not watched closely and/or struggles against being dressed up. If kitty gets away or is forgotten, and goes outside, she could get hung up, fair game to predators, abusers, or simply being strangled, or starving to death. Inside dangers are there too, again in the form of strangling, or some other way of being hurt, while dressed in clothes.
I'm sure people who indulge in this practice will protest that they watch their cats very carefully, never leave them alone dressed, and the cat enjoys it. It's the ones who DON'T, that I worry about.
And there are plenty of other ways to bond with your cat, that the cat will enjoy, without sacrificing kitty's dignity. I don't think any cat (or dog for that matter) looks "cute" in human clothing except, as already stated for necessary warmth reasons.
In short: I hate it.
