Nina Agdal shows off toned physique as she strips naked for workout pic #CarryGobySeanKellz #FutureGroupNG via @i_amreginaldjr

Sports Illustrated model proves strong really is the new skinny  

NINA Agdal is the latest celeb to jump on the fitness selfie bandwagon.
The Sports Illustrated model showed off her ridiculously toned physique when she stripped off for an early morning workout snap.

Nina Agdal showed off her workout results with this snap [Instagram]

Flaunting her naked body for the intimate shot, the 22-year-old proved strong really is the new skinny.
Revealing her muscular back, tiny waist and toned arms, Nina unveiled the results of her tough workout regime. 

And she made us all feel very guilty about our weekend of chocolate indulgence when she captioned the snap: "#progress skinny doesn't mean weak."
The blonde beauty recently showed off her sporting prowess when she completed the first ever Kiehl's Since 1851 Ride for Charity event.

The Sports Illustrated model has got a pretty amazing bikini body [Wenn]

Nina proved she's one of the fittest models around when she competed in 60-second cycling competitions on Flywheel bikes at the NYC Kiehl's Flagship store.
She managed to beat the likes of actor Jeremy Piven and comedian Mario Cantone while raising funds for Food Bank for NYC.
So not only is she a pretty face, she's also got a smokin' bod AND she's a good person – some girls get all the luck.