Sports Illustrated cover model Nina Agdal took to Instagram to show off 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."

Agdal is apparently an exercise freak and her super sculpted body is no surprise. Much recently she was seen competing for a charity event "Ride for Charity" against  Jeremy Piven and comedian actor Mario Cantone. 

The model competed in 60-second-cycling competition on Flywheel bikes at the NYC Kiehl's Flagship store and emerged as a winner against Jeremy, Mario and other consumers who participated.

Agdal took part in the racing event to raise funds for Food Bank for NYC. The event raised a total of $5,000 thus providing  25,000 meals for deprived families.

"Had so much fun riding for charity @FoodBank4NYC with @Flywheel @Kiehls thanks to @jeremypiven for competing with me," Agdal tweeted after winning the cycle race.

Piven replied to the tweet saying, " I want a rematch"

Meanwhile, buzz suggests that Agdal and Piven shared a great chemistry during the racing event.

"They were definitely flirting and chatting a quite a bit, although that's not out of character for Jeremy," E!online quoted a source.

Fans think that romance could brew between Agdal and Piven as the former has recently separated from "The Wanted" member Max George.

Reportedly the couple broke-up after they felt they grew out of the relationship.

''It was hard for Max to dump Nina so soon after news broke that 'The Wanted' are breaking up. But they just wanted different things out of the relationship and had grown slightly apart, " The Sun quoted a source, according to Sugarscape