Oxfords have been seen on the feet of the hottest celebs lately. If you're looking to partake in the preppy chic trend without spending a wad of cash, here are a few options, all under $50.Urban Original Oxford Lace Up Flat, $17.40 DSW Coconuts Goose Laceless Oxford, $39.95 Forever 21 Cracked Metallic Oxford, $24.80 Chadwicks Lace Up Oxfords, $24.99...