Melbourne supermodel Kate Upton will star in a racy Super Bowl ad for Mercedes-Benz.

According to the New York Post, the busty blonde will be featured as an "object of desire" in a 60-second spot for the German car company.

The 20-year-old Holy Trinity graduate, who doesn't have a driver's license, will be alongside A-list singer Usher in the ad.

It's been a big year for Upton. Arguably the world's most popular supermodel, Upton was a Grand Marshal at the Daytona 500, starred in "The Three Stooges" and graced the cover of the Sports Illustrated Swimsuit Issue.