Heidi Klum's motorcycle date with boyfriend

Supermodel Heidi Klum has been spotted on a motorcycle ride in Santa Monica with boyfriend Martin Kristen.

The 39-year-old German model wrapped her arms around her boyfriend as they took a ride through Santa Monica on his Harley Davidson motorcycle on Saturday, reported Radar online.

Despite sporting a crash helmet, Klum still managed to look as glamorous as ever in black jeans and buckled biker-style boots.

The 'Project Runway' host is gearing up for her stint as a judge on 'America's Got Talent' where she will share the pannel with fellow judges Howard Stern, Howie Mandel and Spice Girl Melanie Brown.