Kim Kardashian 'Wasn't Good at Eating the Burger,' Carl's Jr. CEO Says

Eating a hamburger in a commercial isn't as easy as it looks! Carl's Jr. CEO Andy Puzder spoke to the Associated Press about why Sports Illustrated model Kate Upton made the fast food chain's "classic" burger "a lot hotter" but reality star Kim Kardashian did not. Puzder explained that the Keeping Up With the Kardashians star ended up filming a spot for a salad instead of a hamburger because "she wasn't good at eating the burger." He also admitted, "If we had not been promoting a salad, we probably never would've done an ad with Kim." A representative for Kardashian disputed the account, however, and said a salad ad was chosen because she had a fitness DVD and wanted to eat something that tied in more with her brand. In order to model with the burger, Puzder wants you to really love it. "We don't want somebody that's going to go out there and say, 'Well, I don't eat burgers,'" he said. Sports Illustrated model Samantha Hoopes will be the next gorgeous gal featured in a Carl's Jr. ad, which premieres on Monday with "The Most American Thickburger," a beef patty between a split hot dog and potato chips. If you can make eating that look good, you can model anything!

They Can’t Stop! Kylie Jenner & Blac Chyna’s Latest Instagram Insults Revealed

Kylie Jenner and her arch nemesis Blac Chyna are at it again in their no-holds-barred social media war and, as Radar has reported over and over and over again, these two dueling divas cannot let the other throw the last punch without trying for a technical knockout. Click through these 10 photos of the latest disses between the Keeping up with the Kardashians teenage reality star and her boyfriend Tyga’s baby mama.

Fresh face .. Pool type of day 😍 Swimwear | @shopflynation they are having a $20 swimwear sale 😍 @shopflynation

Blac Chyna shared this snap of herself with oversized lips after Jenner finally admitted to using fillers instead of insisting that her puffed up pout was done with lip liner.

What to Wear to the Gym

For a classic, everyday gym look with a trendy twist, Katie chose a pair of gray, forming fitting capri leggings with ruching on the sides to accentuate her stems. She added a sky blue tank over a funky blue sports bra with a tropical floral print and hot pink braided straps in the back. She mixed hues of blue with a slightly darker zip up hoody. To transform her gym wear into street wear, Katie slipped on a denim vest with a hood made of sweatshirt material.

If you like to burn calories on the treadmill you'll love the lightweight, gray running shorts Katie picked up that feature hot pink, red, gray and white detailing at the waistband. The look is extra coordinated with a matching sports bra that can be seen ever-so-slightly through a semi see-through, simple white T-shirt. To complete the look, she threw on a sporty, white baseball cap.

When taking a hip hop class, it's all about looking extra cool. Katie's purple sweats are funky, comfortable and easy to break it down in. She paired the pants with a cute daisy tank and rolled the bottom into her sports bra to give the top a cropped effect. And when it's time to leave class, Katie found a cozy yet fun classic white denim jacket featuring gray sweatshirt material at the sleeves and hood and a gray bag that adds extra edge.

Black leggings are a staple at the gym, but Katie chose a pair with a colorful waistband that adds a fun twist to the classic look. To show it off she tied a black cotton tank on the side and added an extra pop of color with a neon green sports bra. To pop even more, she tied a neon pink sweater around her waist.

For all the yogis out there, Katie has the perfect outfit to get zen in. Her gray and white spandex shorts make it easy to move in and she added a long sleeve black daisy tee over a simple red shirt for some cute layering. To keep warm after class, she found slipped into a Columbia fleece jacket and her black sandals are easy to remove before stepping on to her purple Gaiam mat. A tribal print backpack is perfect for toting around all that yoga equipment in.

Kendall, Kylie Jenner Party With Gigi and Bella Hadid in Monaco: See Their Bikini, Yacht, and Race Photos

Sisters and sisters take Monaco! Kendall and Kylie Jenner spent the weekend partying on a yacht and at the Formula 1 race with their celebrity sibling pals Gigi and Bella Hadid, as well as Hailey Baldwin. The girls shared photos via social media of their adventure-filled excursion in Monaco this past weekend, where they spent most of their mornings partying on a yacht and spectating Lewis Hamilton dominate at the Monaco Grand Prix race on Sunday.

Kylie, 17, posted a pic on Sunday, May 23, of herself wedged between Kendall and Bella, while Hailey and Gigi flanked her from the other side. "Look at how much I love Bella," Kris Jenner's youngest child wrote of Yolanda Foster's daughter. Bella shared the same photo and wrote on her Instagram. Bella posted several risqué shots including one of herself in a bikini, exposing her butt cheeks. She also shared an exciting video of her and Kendall jumping off the side of the boat into the water below.

Kendall also posted several artistic snaps from their yacht this past weekend, including one of her, Baldwin, and Bella in their skimpy swimsuits. The pile of polaroids also included one shot of Kendall's bikini top, which exposed some underboob. Like the others, Baldwin also posted bikini shots from their boat via Instagram, including one of herself in a skimpy white swimsuit. She also uploaded a pic of Kendall's foot and tagged Justin Bieber in the bizarre pic.

On land, Kylie shared a snap from the actual race with Tyga on Sunday. An observer told Us Weekly that the pair were "very touchy-feely" at the races. Follow us: @usweekly on Twitter | usweekly on FacebookHer big sister was equally excited to spectate the event on Sunday, sharing a photo of herself watching the races in a skimpy printed jumpsuit. An observer at the races on Sunday told Us that Kendall was hanging with the Hadid sisters and Hailey at the Mercedes AMG Petronas VIP area.

The girls were at the race to support Lewis Hamilton, whose Mercedes AMG won with this teammate Nico Roseberg taking first. "With my lovey about to watch the race #TeamHamilton," Hailey wrote via Instagram, while Bella added on her account: "You're #1 in our book....and every other book ever @lewishamilton."

Baldwin shared a shot of Gigi and Kendall making faces while another hand grabbed one of Kendall's boobs. "Everyone's always grabbin on Kenny," Baldwin wrote.

Celebrity Beach Bods -- See the Pics!

Is it getting hot in here?!

To celebrate Memorial Day weekend we threw together a gallery of our favorite celebrity beach bods -- and they'll definitely be some great inspiration to get bikini ready for summer!

From Demi Lovato, whose confidence is contagious, to Amber Rose, who just loves to show off her sexy curves and Zoe Kravitz, who has one of the most effortless summer styles, we can't get enough of these sexy stars!

But these ladies aren't the only Hollywood hotties who've been showing off their fit physiques – click "Launch Gallery" above to see more sexy stars like Justin Bieber, Kim Kardashian, Fergie, Liam Hemsworth, Lindsay Lohan, Katy Perry and more!

Who's your summer inspiration? Tell toofab what you think in the comment section below!

Donald Trump's Daughter Tiffany, 21, Shows Off Killer Bikini Bod! - See more

Tiffany was raised by her model mom in California, and she said living far away from her famous family gave her a different outlook on life.

"Since I have grown up on the West Coast, I’m definitely different from all of them growing up on the East Coast," she added. "It’s a different kind of lifestyle. In New York, my dad is the center of the city. It was great for me getting a chance to grow up as a normal kid just out of the spotlight, versus all of them growing up in New York. They always had that intense media and spotlight on them."

"My brothers and sister have all achieved so much in their lives and achieved so much success. But I’m growing and learning, I have a strong head on my shoulders," she added.

We're expecting to see a lot more from this girl!

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Kylie Jenner, 17, Travels to Monaco with... See More

Kylie Jenner and Tyga have taken their rumored relationship abroad!

The 17-year-old reality TV star and the 25-year-old rapper shared a couple photos together on Sunday as they watched the Monaco Grand Prix together in the French Riviera.

The young "Keeping Up with the Kardashians" star showed off her plump pout as she made kiss lips for the camera, sporting a red bandeau top and matching headphones alongside her tatted beau as they checked out the race.

The two were joined at the annual event by Kylie's older sister, Kendall Jenner, as well as friends Gigi Hadid, Bella Hadid and Hailey Baldwin. The sighting comes after the slightly older models all attended Cannes last week. Kylie and Tyga have been mum about their relationship, but the rapper did recently get her name tattooed on his arm.

"I feel like it doesn't matter what the world thinks. If you're around somebody, and you love being around that person, that's all that matters," he also added in a recent interview. "I don't feel like what anybody could say would change that, how I feel for her as a person. She's just a good person, she's got great energy."

When asked if he loved her "romantically speaking," Tyga avoided answering straight on. "I mean, I don't think it really matters," he replied. "If you love being around somebody, that's all that matters, you know? Sometimes you gotta just let that artist live their own personal life sometimes, and you gotta respect that as a fan and a spectator of what we do."

What do you think about this pairing? Sound off below!