Whether you're buying new pieces or just shopping your closet, sticking to mostly neutral colors is important.
Griffin recommended picking a neutral base like black or gray for most of your pieces, and a few articles of clothing in accent colors like blue or red.
"Everything should work together," Griffin told Business Insider. "You shouldn't have any closet singletons."
It might seem boring, but it's important so you can mix and match pieces. Having tops and bottoms in all shades of the rainbow is exciting until you realize you can only wear your striped yellow pants with the one black shirt you decided to buy.