i totally missed this when it played on tv and am happy to trip upon it and some related reply posts on youtube.
essentially its the make over of a normal looking woman into a billboard model through a combination of good make-up and a fair bit of photoshop. do check it out bellow.
whats just as interesting if now way more so is the replies that are posted or that show up to the right hand side of the Dove clip including several parodies. this one bellow starts off with a rather horrible webcam shot and and ends up with the result put on a faked up playboy cover.
a silly thought, maybe there are no super models? just us plain janes and its all photoshop and makeup?