What do Alber Elbaz, Michael Stipe, Matthew Modine, model Constance Jablonski, Kim Hastreiter, Loomstate’s Scott Hahn, surfer Kassia Meador and threeASFOUR have in common? They’re making A Bid to Save the Earth, and they’ve shot a video about it for Christies’ first Green Auction on April 22, the 40th anniversary of Earth Day. We’re not sure about the farmer part, but how adorable is Alber’s giggle?…