While strolling the streets of NYC, both Jessica Alba and the new Carrie Bradshaw, AnnaSophia Robb, offered up a simple style lesson. Both actresses started with all-black ensembles but took their looks from basic to bam via a colored scarf. Jessica opted for bright yellow, while AnnaSophia went with a more subdued lilac. Either way, this quick accessory addition really elevated their looks to higher fashion status. You probably also have many colored scarves in your closet, so the next time you wear all black, throw one on for easy pizazz. Or, if you're digging yellow and lilac like Jessica and AnnaSophia, step inside to shop similar pieces.