The contest is called: "Costume Design Contest". You will be asked to first create a basic character, but then put the full force of your creative talents in a costume for said character. Next for a slightly technical change of pace, you will be asked to rig and animate it with Mixamo and apply some cloth simulation with Houdini (All tools provided for free for your contest entry, of course). Submit some wondrous moving polygons and you can find yourself rewarded for the efforts.
There's a bunch of prizes on the line here from cash money to full software licences and more. You will need to hit the full contest site at Mixamo to get all the fine details and more importantly get yourself registered if you are wanting to participate. Good luck to all.