Days and days of pounding rain are making me feel like I'm living in London rather than LA. So I'm looking to Britain-based stylist Jessica Skye to whisk me through the grey and gloom, easily and elegantly. Her seasoned style is anchored in a simple tenet: always wear a statement coat! She favors the scarf-trimmed Toteme, which she has in TWO colors (this less expensive version from Cos is a score!), a classic waxed jacket, and an oversized camel coat. Accessories like knee-high boots, a…