Mules Rule: The 'It' Spring Shoe Is a Blast From the Past

The backless shoe is back again, with mules popping up on the coolest spring runways from Stella McCartney to Fendi. Perhaps it's no surprise, since they were last popular in the 1990s — the decade dominating retail shelves and our closets these days. From sneakers to flats to heels, there's a type of mule for everyone, and they're a great shoe for transitional weather. Go sockless in a pointy boot-like pair till the temperatures rise, and then stick with an open-toe strappy sandal version all summer long. Read on for a brief history of spring's must-have shoe, and check out the coolest mules on the market. By Joanna Douglas, Yahoo Shine Senior Fashion and Beauty Editor