Kate Upton recently stunned in the newest Bobbi Brown Cosmetics campaign in a tiny bikini top but her talents as a spokesmodel began with her scintillating Carl's Jr. ad. 

She was so good in the commercial, that the hamburger chain declared the swimsuit model a sexier choice than reality star, Kim Kardashian, according to The Inquistr. 

"Kim really couldn't eat the burgers," CEO Andy Pudzer revealed to The Asssociated Press. "Luckily, we had a salad we were promoting, so we used Kim in the salad ad. But if we had not been promoting a salad, we probably never would've done an ad with Kim, because she wasn't good at eating the burger. She's too tiny. She's really little."

To keep up with their previous advertisements, which feature models eating huge burgers in "barely-there" swimsuits, they knew they had to get someone really sexy, and Upton became the clear choice.  

"We have a history of picking these women before they hit their peak," Pudzer said. "We put Kate Upton in an ad a month before she got the cover for Sports Illustrated."

In the ad, you see Upton doing her thing as she strips down while eating their newest spicy burger. 

"At the time we picked her, we just said, "This is a beautiful woman," Pudzar said. 

This isn't the first Sports Illustrated model to be featured in one of the ads. Last year, Hannah Ferguson was their choice.

"All us girls at Sports Illustrated, we all talk about who's going to do the next Carl's Jr.," Ferguson said. "And how can we be the model that does the next ad?"

People really love these ads and look forward to seeing who their newest pick is. 

"People watch for the ads, and want to know when the next one's coming out," Pudzar says. 

Watch the two videos below and see who's hotter, Upton or Kardashian.