Last seen in some of the ending images for Metroid Fusion and Metroid: Zero Mission, Samus' top and shorts combo make their debut in Super Smash Bros. for 3DS/Wii U.
In today's Miiverse Pic of the Day update, Sakurai writes:
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!
I wonder if we'll see the green hair and pink bodysuit JUSTINBAILEY Samus, the brown hair and pink clothing Metroid ending Samus, or the black clothing of Super Metroid Samus also appear.
For comparison, here are the versions from the two GBA games.