Vanessa Hudgens took a dip in a bright bikini during her Hawaiian getaway yesterday. She was joined on the beach by boyfriend Austin Butler and the couple showed PDA on the sand when they weren't in the water. They shared a laugh when Vanessa almost lost her bikini top, but she avoided the wardrobe malfunction by retreating to a cabana to retie her suit. Vanessa made the tropical trip to promote Journey 2: The Mysterious Island, but now that she's done with press it's been all about relaxation. Vanessa and Austin cuddled on lounge chairs last week and were spotted sharing a romantic sunset moment over the weekend. The duo will soon return to the mainland, where Vanessa has more work to do ahead of the Feb. 10 release of her adventure film.