Hilary Duff steamed up the beach during a family vacation in Hawaii on Thursday. The Younger star, who was joined on the getaway by her ex-husband, Mike Comrie, and their 3-year-old son, Luca, flaunted her toned figure on Wailea Beach while sporting a supersexy Solid & Striped bikini; she spent time wading in the ocean as well as drawing in the sand. Hilary has been showing off her fit physique in a series of two-pieces this week, as she and Mike made their way to Hawaii just days after announcing that their divorce was finalized. While their split may be official, the former couple has vowed to put their little boy first and have managed to stay friendly for his benefit. Hilary told Ellen DeGeneres recently that she and Mike are "good friends" and that they "laugh a lot." She went on: "We have a great communication and we share pictures when one is not with Luca. He's great, we are great, and we keep on trucking." Keep reading to see Hilary's superhot bikini pictures.