A trench coat is a classic, it never goes out of style, but now it's being updated with a little bit of piping. Check out supermodel Helena Christensen strolling the street of NYC in her super-chic piped khaki trench. Without the black leather piping, it would have been classic sans pizazz. But the contrast on the lapel turns the traditional trench coat on its head, giving it more flavor. If you don't yet have a piped trench in your closet, consider getting one to wear all Spring and Summer. It'll top everything from solid bright frocks, like Helena's, to printed dresses, to jeans and tees, to a nighttime LBD. Sold? Shop our favorite piped trenches below.