| Unlockable Costumes |
|---|
|
| Action | Result |
| Turn 2 characters into star characters. | Fire Mario Costume |
| Turn 5 characters into star characters. | Propeller Mario Costume |
| Collect 1500 coins in the Galaxy Rally Challenge Special Game.. | Luma Costume |
| Reach a total of 50000 coins | Toad Costume |
| Turn 15 Mario characters into star characters | Tanooki Mario Costume |
| Turn 10 Mario characters into star characters | Cloud Mario Costume |
| Turn 8 Mario characters into star characters | Bee Mario Costume |
| Reach 50 returns in the Ink Showdown Challenge | Petey Piranha Costume |
| Earn a total of 5000 points in Online Multiplayer Open matches | Wiggler Costume |
| Earn 100 Victory Medals from Online Multiplayer Open Matches | Dry Bowser Costume |
| Earn 20 Victory Medals from Online Multiplayer Open Matches | Bowser Jr Costume |
| Buy 100 different items in the item shop | Boo Costume |
| Meet 20 Mii characters via Streetpass | Diddy Kong Costume |
| Collect 700 ring points in Ring Shot Callenge with another player | Daisy Costume |
| Meet 50 Mii characters via Streetpass | Donkey Kong Costume |
| Earn 50 Victory Medals from Online Multiplayer Open Matches | Bowser Costume |
| Collect 800 Coins in Super Mario Tennis level 2-4 | Waluigi Costume |
| Collect 800 Coins in Super Mario Tennis level 1-4 | Wario Costume |
| Use QR Code from official Nintendo website | Yoshi Costume |
| Collect 800 ring points in Ring Shot Callenge | Peach Costume |
| Beat the Star Final Cup Tournament in Doubles | Luigi Costume |
| Beat the Star Final Cup Tournament in Singles | Mario Costume |
| Add 100 items to the item-shop shelves | Goomba Costume |
| Beat an Ace opponent in a singles Exhibition match | Birdo Costume |
| Win 10 consecutive StreetPass matches. | Koopa Troopa Costume |
| Win 20 consecutive StreetPass matches. | Shy Guy Costume |
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