Sakurai’s Daily Screenshot - August 19, 2014
"Looking at the number of days we have left for development, it would be an impossible task to create this… That’s what I told my staff. But thanks to the determination of her female designer, these Zero Suit outfits got completed in time. From the ending of Metroid: Zero Mission, here’s Samus in shorts!
Here’s a look at the 3DS version. You can use the same outfit variations in both the 3DS and Wii U versions.” - Masahiro Sakurai