The time has finally come!
Marking her first-ever fitness contract, the supermodel bares her abs while boxing in a strappy sports bra for the ads!
Gigi's not someone you want to mess with!
Especially as we saw how the 21-year-old defended herself against a celeb street attacker in Paris a couple of weeks ago!
Obviously the social media celeb couldn't be more perfect to star in Reebok's campaign. LOLz! And speaking of the importance of fitness, she even shared: