glamour:

“Accents of color always brighten you up, whether they’re from a trim, a bag, a shoe, jewelry, a hat, or a whole article of clothing. If you have on a pair of black trousers, and you do a great printed shirt with some beautiful floral print or a bold red color, your whole face can really come alive. The same goes for animal prints or sequins and glitz. But I call it a pop because you should only wear one piece like that at a time. I’ve seen more women in allover looks, and I’m sorry but you just can’t. Pick one.” -Rachel Zoe

Read more of Rachel Zoe’s style Dos and Don’ts, over on Glamour.com.