So it's St. Patrick's Day, and your friends have, in a friendly fashion, pinched you black and blue because your ensemble lacks green. Don't let this happen to you again. But don't go buy one of those tacky shamrock/slogan buttons either - you have taste. Instead, sling on this mint-hued shoulder bag from Orla Kiely ($526) - she's Irish, after all. And put some pepper spray in there.