Good question. I'll be boarding Splendor in Miami in January, and I will be wearing warm-weather gear during the day (or "Florida in winter" apparel, as it were). I don't wear shorts too often, but I will have a pair for excursions. Onboard I'll be wearing capris, in the main, or cropped (lightweight) pants, since that's what I'm most comfortable doing, with various types of short-sleeved shirts. I'm not a leggings person, but I can't imagine it being cool enough for something that warm. For chilly breezes on deck or in a lounge or theatre, I'll probably have a lightweight fleece or a shawl, depending on the circumstance. The latter in the evenings for sure, sometimes with a long skirt for a change with a somewhat nicer top than during the day.