You're luckily near Doral, which has a huge place for coats and winter clothing, as well as other items for men, women, babies, and kids at a great price: Burlington Coat Factory. It is located in the Dolphin Mall, their site is burlingtoncoatfactory.com. A lot of their items are on sale, and they have supercute things for kids and snow suits that will keep their legs warm too and match the jacket. I am planning to go there this weekend due to this crazy cold weather we're experiencing and the lack of winter attire for myself and my toddler. If you're in no rush, ebay.com or amazon.com has great deals on brand new coats, with the tags still attached. If you don't mind used clothes, try craigslist.org, you can find someone near you that came down from up north and no longer needs their coat that's dying to sell it to you at a reasonable price. They sometimes have designer coats there too. There's always Goodwill, if again, you don't mind something used. Target.com has coats and sweaters as well, but if you want something very warm, that you can try on and not deal with the hassle of returns and have no time to wait for delivery, then I recommend Burlington, as they have down coats, wool coats, coats for plus sizes and petites, lightweight coats, all-weather (like for snow or rain), and some of their coats come with removable layers in case it gets a bit warmer. Some of their kids' coats come with a scarf attached, which would save you the cost of buying a scarf, or if that's not your cup of tea, you can check Macy's clearance section or their macys.com site, they sometimes have decent prices on their coats and sweaters. Old Navy has nice coats as well but apparently are mostly sold out at this point or the stores have huge lines. Personally, I won't buy such a thing as a coat without trying it on as some materials can make you look like you put on 30 lbs, and some materials are not warm enough, something you cannot appreciate unless you're able to feel the material. I don't know much about what to wear up north, but I assume earmuffs, boots, flannel pajamas and longjohns will come in handy as well as some thick socks in addition to the obvious coat, mittens, sweaters and scarves.