Kristin Cavallari showed off her pregnant body in a strappy black swimsuit while vacationing with husband Jay Cutler and son Camden. The 27-year-old former "The Hills" star shared a picture of her beach "vay-cay" on her Instagram account Thursday. "Been having a beautiful, relaxing family va-cay," Cavallari captioned the image. "Thanks @mikoh_ for the perfect preggers bathing suit." The photo comes a couple of weeks after the reality star revealed she was pregnant with another son. The designer and her Chicago Bears quarterback husband welcomed their first child in August 2012.