Jessica Alba Wearing Printed Dress

Although Winter has just begun, our favorite fashionable celebs have been vacationing at some of the most beautiful beaches and donning some seriously chic warm-weather looks. Julianne Hough worked a breezy island-ready combo while shopping in St. Barts, Jessica Alba sported a punchy Isabel Marant tunic with a panama hat in Cabo, and Michelle Williams topped her black bandeau bikini with a chambray shirt and classic shades in Mexico. If you're heading to a tropical destination or just getting a jump-start on planning your Summer adventures, be sure to mimic these two celeb-approved resort looks.