Here are Celebrity Mii QR Codes from the official Tomodachi Life website:

How would you like to play videogames with Christina Aguilera? Or sing karaoke with Shaquille O’Neal? Well, you can. Or at least, your Mii can, when you scan the QR Code patterns below and import these celebs into your Tomodachi Life game.

Jun 22, 2014 Nintendo Offers Shaquille O’Neal, Christina Aguilera, and Other Celebrity Miis for Tomodachi Life Finally, Christina Aguilera and Shaquille O’Neal can get married. Celebrity Miis are 5 Miis which represent famous people in real life and can be downloaded to Tomodachi Life and added to the Island. Each of the Miis were released on the Tomodachi Life website when the game was first released on June 6, 2014. They included Christina Aguilera, Shaquille O'Neal (Shaq), Debby Ryan, Shaun White, and Zendaya. Players could scan QR codes through the town hall to. Shaq (Shaquille O'Neal): Originally from the official Tomodachi Life site, now available here. Mario, Luigi, and Peach: From Crystal Dreams. Be sure to check out my Tomodachi Life Blog to follow my ongoing adventures in the game or read my review of the game. I also maintain lists of kids born on my island and items in my collection.

Debby Ryan

Shaun White

I’ll also take this time to link a great link from tumblr
http://tomodachiqr.tumblr.com/ – A blog dedicated to posting Tomodachi Life QR codes, If you see one of your QR codes on here please tell me so I can give you credit.