Emily Ratajkowski is enjoying her "party girl week" to the max. Ratajkowski, 34, went "skinny dipping" and left little to the imagination while posing in a barely-there black dress in a series of fun-filled photos shared via Instagram on Monday, September 22. The cover girl showed off a slinky design, which featured long sleeves, a silk silhouette and a daringly low-cut neckline that plunged to her waist and exposed her cleavage. The rest of her look was complete with a relaxed collar and a delicate train. Ratajkowski styled the piece with diamond stud earrings and strappy black heels.