I'm traveling to San Francisco on Thursday. My wardrobe is very limited and I desperately need to go shopping. But I have no idea what to buy or what outfits to put together for the trip. I've heard layers are good but I don't know where to start. It's a casual trip, jeans will be mostly worn, although dressy ones. But I want to look stylish and modern and a bit sexy too. First trip with new boyfriend. :). Flats or boots for walking the city. Where do I start? Any advice? Thanks!