Sporty separates like baseball jackets, tees, and caps were popular among the street-style set last season and even trickled into Oscar de la Renta's resort show. While it often requires some deft styling to work athletic pieces into an outfit — after all, you don't want to look like you're headed straight for the outfield — Rebecca Taylor's embellished version of the baseball tee is easy to wear. Just throw it over a pair of jeans or pair with a long silk skirt for a relaxed evening look.

Rebecca Taylor Nailhead Tee, $245 at Rebecca Taylor