Burger chain Carl's Jr. has released a super-sexy commercial for Super Bowl 2015, starring Guess model Charlotte McKinney to promote its new All-Natural Burger by walking through a farmers market and going "all natural." Is Carl's Jr.'s new ad sexier than iconic Victoria's Secret Super Bowl commercials?

Carl's Jr. is no stranger to steamy advertisements.

"This is par for the course for Carl's Jr.," said Richard Laermer, Chief Executive of RLM PR in New York. The brand has used Paris Hilton and Kate Upton in its commercials in similar scenarios, TODAY reports.

But Charlotte McKinney is now being deemed the new Kate Upton. Her blonde hair, curvaceous figure, and sweet face are uncannily similar to the Sports Illustrated model.

Check out the sizzling Carl's Jr. Super Bowl 2015 commercial below:

"I love going All-Natural," she says in the advertisement in a sultry voice, "It just makes me feel better."

Some are saying the ad takes it too far: "It's like porn meets American Pastime," branding consultant Erika Napoletano said, USA Today reports. "It makes NFL cheerleaders - underpaid and underclothed - look like nuns in comparison."

"She doesn't look like any women I know," Napoletano added about McKinney. "This is all about the cheap, visual joke."

But Brad Haley, chief marketing officer at CKE Restaurants, parent to sibling burger chains Carl's Jr. and Hardee's, defended the commercial: "We don't show things in our ads that you won't see at the beach on any given warm, weekend," he said. "We don't cross the line - but we like to get right to the line."

"We know, from our history, this is the kind of ad they want to see over and over again," Haley added.

On Wednesday, Victoria's Secret confirmed that it planned to feature its famous models in a Super Bowl 2015 commercial. Check out their sneak peeks below:

What do you think, Super Bowl fans? In your opinion, who takes the trophy for sexiest commercial?

And who can forget the Carl's Jr. ad featuring Kate Upton for its jalapeno-laced Southwest Patty Melt? Watch it here (you're welcome):