Katie Holmes masterfully combines preppy and coastal aesthetics. When she's not on starring on Broadway or strutting down the red carpet, she's running errands in an Insta-worthy outfit. Her recent style? A crisp button-down top that we've been swooning over, and this on-sale Amazon pick delivers the look for less. While the Holmes' exact top is a mystery, we're gushing over this affordable lookalike that's just as breezy, cooling and effortlessly chic.