Sometimes, you have to travel for a special event to a place where the days are warm, but the evenings can be quite cool. This is a perfect opportunity to invest in an astonishingly beautiful coat, which gives you lots of colorful options around which to build a travel capsule wardrobe.
UPDATE: In their infinite wisdom, Google has made it impossible for me to respond to comments... But the question about the handbag color? I personally would always opt for a metallic when I'm not sure of what color. Not a blindingly shiny gaudy metallic - something more subtle and muted, in the same general color range as the Poupee Couture clutch. I find that metallic are a lot easier to blend in with a variety of colors than anything else that I see.
Tee shirt – Burberry Brit, White jeans – Citizens of Humanity, Cardigan – Windsmoor, Watch- Movado, Loafers – Charles Philip, Bag- American Tourister