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First, there was Paris Hilton. Now there's Nina Agdal.

The "Sports Illustrated" swimsuit model is the latest sexy starlet to appear in an ad for fast food restaurant Carl's Jr. An oiled Agdal, dressed in a teeny black bikini, chows down on a juicy fish sandwich as she rolls around on the beach in Maui, Hawaii, with Bobby Darin's "Beyond the Sea" playing in the background. The ad is for the restaurant's new charbroiled Atlantic cod fish sandwich.

Agdal, 20, was named "Sports Illustrated" Rookie of the Year in 2012. She recently told OK! magazine that she keeps her body fit by doing 20 to 30 minutes of cardio followed by weights. She eats whatever she wants, but in moderation. Her go-to splurge food? A juicy hamburger.

Kate Upton, who covered "Sports Illustrated's" swimsuit edition last year, has also appeared in a commercial for Carl's Jr as well as Kim Kardashian and Padma Lakshmi.

SEE MORE: Past "Sports Illustrated" Swimsuit Covers