Russell Simmons girlfriend, German supermodel Hana Nitsche, showed off her amazing bikini body on Miami Beach over the weekend.

The sexy model was in town for the Mercedes-Benz Fashion Week Swim and was taking a break from walking the runways and modeling next year's top swimwear designs to actually jump in the water in her own bikini.

Hana got her career off to a start as a finalist on Germany's Next Topmodel. She came in third on the show's second season in 2007.

She's been dating Simmons, who is 29 years older, late last year.