Attending beach functions or bachelorette parties involves much more than just grabbing your favorite swimsuit and throwing it into a bag. You're probably already packing slip-on sandals, a large carry-all tote, and Instagram-worthy towel, but the one thing you must add this season is a cover-up. Whether you want to protect yourself against that Summer breeze or just like to cover your skin while lounging poolside, Cover-Ups are clutch. Up ahead, we have 25 affordable picks.