Kitty la Kitty!

I like to think that Ryuko has black dots on her ears, just like tigers have.
Satsuki’s ears are rather small.
Mako has got short whiskers, but on the other hand kitty girls usually have shorter whiskers - except Ryuko and Satsuki.

Second Kitty la Kitty set
Third Kitty la Kitty set
Fourth Kitta la Kitty set