| Costume | How to unlock
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| Bee Mario | Turn eight characters into star characters.
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| Birdo | Defeat an Ace opponent in a singles Exhibition match.
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| Boo | Purchase 100 different items in the item shop.
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| Bowser | Get 50 Victory Medals from Online Multiplayer Open Matches.
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| Bowser Jr | Get 20 Victory Medals from Online Multiplayer Open Matches.
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| Cloud Mario | Turn 10 characters into star characters.
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| Daisy | Collect 700 ring points in Ring Shot Callenge with another player.
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| Diddy Kong | Meet 20 Mii characters via StreetPass.
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| Donkey Kong | Meet 50 Mii characters via StreetPass.
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| Dry Bowser | Get 100 Victory Medals from Online Multiplayer Open Matches.
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| Fire Mario | Turn two characters into star characters.
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| Goomba | Add 100 items to the item shop shelves.
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| Koopa Troopa | Win 10 consecutive StreetPass matches.
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| Luigi | Win the Star Final Cup Tournament in Doubles.
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| Luma | Collect 1,500 coins in the Galaxy Rally Challenge Special Game.
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| Mario | Win the Star Final Cup Tournament in Singles.
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| Peach | Collect 800 ring points in Ring Shot Callenge.
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| Petey Piranha | Get 50 returns in the Ink Showdown Challenge.
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| Propeller Mario | Turn five characters into star characters.
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| Shy Guy | Win 20 consecutive StreetPass matches.
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| Tanooki Mario | Turn 15 characters into star characters.
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| Toad | Collect a total of 50,000 coins.
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| Waluigi | Collect 800 Coins in Super Mario Tennis Level 2-4.
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| Wario | Collect 800 Coins in Super Mario Tennis Level 1-4.
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| Wiggler | Get a total of 5,000 points in Online Multiplayer Open matches.
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| Yoshi | Scan the QR Code from the official Nintendo website.
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