Fashion designer Hussein Chalayan premiered his Spring/Summer 2007 collection this week, and it's full of Swarovski-crystal-embellished animatronic couture. The clothes wriggle, unfold, collapse, and transform by themselves. The final act in Chalayan's show, at left: this piece began as a dress, morphed into a hat, then rained down as a cloud of Swarovski crystal dust. Hot. Snip from Sarah Mower'