Make mine extra hot! Kate Upton illustrates her curves in spicy Carl's Jr. burger commercial

Kate Upton's friends staged an intervention last year when they thought the model had put on too much weight.

But the 19-year-old beauty obviously doesn't care about indulging in fast food every once in a while and happily tucked into a Carl's Jr. burger for their latest commercial.

The 2012 Sports Illustrated swimsuit issue cover girl has said that she has a healthy appetite and attitude towards food making her the perfect choice for the campaign.

Spicy: Kate Upton brings the sex appeal as she tucks into a burger for a new Carl's Jr. campaign

Tasty: The 19-year-old Sports Illustrated cover girl apparently has a refreshingly healthy attitude towards food

New It Girl: Kate arrived at Pure Nightclub at Caesars Palace in Las Vegas last night to promote her Swimsuit Issue cover

Kate looked gorgeous as she showed off her perfect pins on top of a car as she posed with the huge burger.

Wearing a black and white polka-dot dress with her lacy bra on show, the blonde bombshell closed her eyes and seemed in burger heaven as she took a large bite of the Carl's Jr.'s/Hardee's new Southwest Patty Melt.

The meaty delight spices up a classic by combining 'premium quality ingredients including spicy Santa Fe sauce, grilled onions, Pepperjack cheese and jalapeños to create a unique flavoured burger on a toasted sour-dough bun.'

Celebration: The blonde beauty was presented with a bunch of flowers by event host Mario Lopez

Eyes straight: A reporter on the red carpet got up close and personal with the model

Sexy and single: Kate was coy about her rumoured romance with football player Mark Sanchez only saying that he is 'cute'

The commercial was filmed on a hilltop overlooking downtown LA and will air in America in late February.

In another image Kate is seen straddling the Carl's Jr. takeaway bag as she looks seductively into the camera with her ample assets on full display.

Other celebrities who have been spokesmodels for the popular burger joint include Kim Kardashian and Padma Laksmi.



Meanwhile, Kate was out again in Las Vegas last night to promote her much publicised SI cover.

She looked lovely in a simple purple strapless mini dress and had her hair in a messy up-do and simple jewellery and make-up.

Model power: Swimsuit models Anne V (left), Jessica Gomes (middle) and Genevieve Morton (right) also attended the Sin City bash

Fun night out: Kirby Griffin (left), Alyssa Miller (middle) and Izabel Goulet (right) pose on the red carpet

Kate was attending an event hosted at Pure Nightclub in Caesars Palace.

She was presented with a bunch of flowers by Maria Lopez who compeered the night and enjoyed being the 'it' girl of the moment.

Kate was joined by some of her gorgeous model friends including Anne V, Michelle Vawer and Chrissy Teigen who brought along her musician fiancé John Legend.

Bruno Mars was the entertainment for the night and sang some of his hits for the crowd.

Lovely ladies: Michelle Vawer (left), Jessica Perez (middle) and Julie Henderson (right) sizzle in Sin City

Kate was also out with the beautiful people on Wednesday night and they enjoyed an evening at Haze nightclub in the Aria Resort and Casino.

She wore wore a figure-hugging black strapless dress with a white hem skimming her cleavage and posed with her coveted cover.

It was recently revealed that the 5' 11' model might never have made the front of the magazine if wasn't for some friendly dieting advice from her pals.

The 19-year-old bombshell reportedly let her figure go last summer - so much so that her friends stepped in to set her back on the path to superstardom.

Handsome couple: John Legend and model fiancée Chrissy Teigen enjoyed date night at the bash

A friend of Miss Upton's told the New York Post: 'She’s not your typical model... She will eat anything. She’s not assuming. She’s not into herself. She’s not very affected.'

The football fan's laid-back approach started to show, the newspaper said - and pounds piled on, in part because of her refreshingly healthy attitude to eating.

Extra gym sessions were all it took to hone her body into readiness for the coveted role, the hard work paying off, it appears.

The Post reports that the model last night admitted to her sweet tooth at club Crimson in New York.

She said: 'I never deprive myself. If I’m craving something once a week, then I’ll go have it... Ice cream or whatever, I just eat the foods I like.'

Her workout regimen keeps her in shape, and she praised her personal trainer for her figure.

'I have to give credit to my trainer. He definitely kept me motivated in staying in shape... I’ve always been naturally curvy, but of course I had to get used to being in the public eye', she said.

Weight-loss: Kate Upton modelling in the Beach Bunny fashion show in Florida in July 2011 (left), and (right) at a launch part for her Sports Illustrated Swimsuit Issue cover this week

Meanwhile, Kate was coy when asked about her rumoured romance with New York Jets quarterback Mark Sanchez on the Ellen DeGeneres show this week.

'Your boyfriend, New York Jets quarterback Mark Sanchez. How does he feel about this?' Ellen asked about the SI cover.

As she got increasingly uncomfortable and started tittering nervously, Upton responded: 'Even if I had a boyfriend, I wouldn't ask how he felt about it.'

Beauties: The blonde stunner was joined by last year's cover girl Irina Shayk at the SI Swimsuit on Location event at Haze Nightclub

Kate admitted that she had met Sanchez but the best Ellen could get out of Upton was for her to reveal that she spent Valentine's Day alone - and that she thought the NFL star was attractive.

A source told Us Weekly that the two aren't in a serious relationship. The insider said: 'They started hanging out about seven months ago.