Note the keyword "and". You have to have all of:
- body colour
- body pattern
- upper costume
- lower costume
set to be something that is uncommon, rare, or legendary. Luckily you will unlock an uncommon or rare body colour and pattern after a few games, and you are provided with a "rare" wolf top and bottom from the start. From the main menu screen, use
to move to the customisation tab, and choose the relevant options to equip them.