In case you haven't heard or seen, Birkenstocks are on the feet of the most stylish and posed to be one of the biggest shoe trends of this season. Gone is the stigma of unstylish, plain footwear reserve for diehard hippies! The iconic two-strap sandal is back and better than ever with chic designs and celebrity support by the likes of Heidi Klum, Drew Barrymore, Selma Blair and Mary-Kate Olsen. Check out these irresistible Birkenstocks and their copy cat counterparts to incorporate them in your spring wardrobe! Or not. Can we call it a comeback?! We'll let you decide...[Photos via @happysashashu]