By 
Confirming a leak reported on in an earlier post, Nintendo has officially released the Mashiko/Mary O. costume and Event Course in Super Mario Maker. The new course is titled “Mary O.’s Lunch Break” and will reward the costume once you complete it. Here’s the course description:
Recommended Videos
“Mary O., the friendly guide from the Super Mario Maker manual, finally makes her in-game debut! ‘It’s my lunch break, so I’m heading out for a quick bite to eat. Out of the office, across the street, up some… vines?! Maybe this won’t be so quick after all…’”
Additionally, here is a video of the Mashiko/Mary O. costume in action: Super Mario Maker is available for the Wii U.
