Whether you're posted up in a bikini on vacay or pounding the city pavement, summertime is all about enviable beach hair. Alas, that effortless, off-duty surfer swag we dream of isn't something that just happens (unless you're #blessed like a Hadid sister). With that in mind, we've rounded up the latest and greatest Insta-ration to remedy this ASAP. Get ready to see those likes roll in...