"Catsomization" is a fancy word for customization of your feline driver. Choose from variety of fancy costumes and hats to make your cat look stylish!
To open Catsomization, tap on your garage and then on "Tap to edit" above your cat's character.
Drag the costume or a hat on your character and it will be saved automatically.
Some costumes are available at the beginning of the game, others require you to pass a certain stage to open them. After the costume is unlocked, you can either buy it for gems or by spending gold.