Nina Agdal Goes Topless on Instagram, Reveals Sexy Back and Sculpted Biceps

Nina Agdal, the Sports Illustrated cover model took to Instagram to shows her sculpted body. Agdal posed topless while showing her back to the camera. Her hair was tied neatly in a bun as she flaunted her back muscles and biceps. Agdal captioned her picture as "#progress skinny doesn't mean weak." Apr 24, 2014