1. In a computing system having a computer operatively coupled to a depth camera, a method to help a subject visualize how a wearable article will look on the subject, the method comprising: receiving with the computer a depth map of the subject, the depth map acquired by the depth camera; obtaining with the computer a virtual skeleton of the subject based on the depth map; harvesting from the virtual skeleton by the computer a set of subject metrics corresponding to distances between predetermined points of the virtual skeleton; providing the subject metrics as input to an engine of the computer configured to output a virtual body mesh as a function of the subject metrics; refining the virtual body mesh by the computer, by varying the subject metrics to decrease distance between points on the depth map and corresponding points of the virtual body mesh, the refined virtual body mesh being a basis for a posable, three-dimensional, virtual avatar resembling the subject; obtaining at the computer data that identifies the wearable article as being selected for the subject, the data including a plurality of article metrics at least partly defining the wearable article; attaching by the computer a virtualized form of the wearable article to the avatar; and providing the avatar, with the virtualized form of the wearable article attached, from the computer to a display component of the computing system, for the subject to review.