Spring has arrived, the days are getting longer and the sun is shining brighter. Time to invest in a new pair of designer sunglasses! Wait, maybe not. I don't know about you, but I've lost, sat on or otherwise broken so many pairs of sunglasses over the years, that I now refuse to spend any more than $40 on a pair of shades. Luckily, there are plenty of affordable options that mimic the high end styles designed by Tom Ford, Karen Walker and Tory Burch. Click through for nine pairs of designer sunglasses that are hot for spring, plus their wallet-friendly copycats...