Models take off their clothes all the time, obviously. And the fashion industry is no stranger to the "green" movement. But in this video, the two come together in a totally cute way. And we likey. Cameron, Hanne Gaby, Heidi, Crystal, et al really couldn't look more adorable getting down to their skivvies for a good cause, 350.org—which is all about taking action for climate change. Go, girls! But, we ask, can you name all the pieces they discard?