EJ has been experimenting with the flat design style using 3D tools the last little while, as in his latest tutorial. Here, EJ shows how to create animated folds, introducing some simple rigging techniques.
EJ shows how to create and prepare the model, create joints, and bind them to the geometry. The animated folds will be created by using the pose morph tag in C4D using keyframes to control how it all plays out. For more great tutorials like this one, check out EJ over at Eyedesyn.com.