Cameron Diaz seems to be working up quite an appetite while spending quality time with model Paul Sculfor. The New York Post says the statuesque actress chowed down during a recent activity-packed sojourn with the square-jawed Brit -- and fleeting Jennifer Aniston arm candy -- at the Four Seasons in the Maldives, where they holed up in an expansive bungalow by the water. "They snorkeled, kayaked, and she ate like a horse," relays a spy. Perhaps Diaz was just fueling up so she'd have enough energy to haul around the "chunky ring" she was supposedly sporting on her all-important finger, which may or may not be the same bauble that sparked engagement chatter in late June, just weeks after she and Sculfor were first spotted getting cozy. When not enjoying the company of the strapping model, Diaz has been playing the model citizen by helping out a four-legged friend in need. People reports she took care of a lost, injured German shepherd on Saturday afternoon at her Hollywood Hills home until its owner could be located. "Diaz brought the dog in her house and gave it some food and water," a source tells the mag, which says she later visited the pooch at the vet.

Justin and Jessica crack a rare smile for photogs last month. (©X17Agency.com)

Meanwhile, Diaz's ex Justin Timberlake went the extra mile to show his support for girlfriend Jessica Biel over the weekend. E! News says the chart-topper was on hand at the Palm Springs International Film Festival's ShortFest on Saturday night for a screening of "Hole in the Paper Sky," which the actress stars in and produced. In an attempt to keep the attention on his Stella McCartney-clad squeeze, Timberlake reportedly arrived separately and joined Biel inside the theater once the lights went down. Later on, the engagement rumor-surrounded couple met up with pals at a nearby hotel before taking off for a Palm Desert pad to enjoy a "private celebration." Says a hotel onlooker, "She looked really happy."

Forget those rumors that Ryan Gosling and Rachel McAdams have possibly rekindled their romance, which crashed and burned more than a year ago. Instead, behold schmoopy proof that the button-cute "Notebook" pair is back on, courtesy of dozens of pictures of them getting handsy during a lunch date late last week in Toronto. Prepare to squee and sigh like the closet tearjerker fan you are as McGosling kiss, nuzzle, feed each other and are just all-around adorable while dining al fresco. Check out the oodles of photos here.

Paul McCartney and Nancy Shevell arrive back in London after a road trip around the States.

There's no better way for a couple to find out if they're truly compatible than by driving cross-country together. If the trip ends with both parties still in the car and on speaking terms, the relationship likely stands a chance. And so it is with Paul McCartney and Nancy Shevell, who recently spent several days road-tripping across the United States on what remains of Route 66. According to Britain's News of the World, the music icon, whose rep just brushed off betrothal talk as "nonsense," arranged for his moneybags squeeze to spend some time getting to know his kids. "It was very relaxed and everyone had a great time," says an insider. "After the [Heather Mills] debacle, Paul doesn't want to bring anyone to meet the family unless he is certain."

Velcro-on, Velcro-off: Paris introduces her interchangeable hair extension headband.

Paris Hilton is as effective at hyping her relationship as she is at her various business ventures. In a posting on her MySpace page, the tireless self-promoter reiterates her passion for boyfriend Benji Madden while plugging her line of handbags, perfume, shoes and clothing, not to mention her MTV-filmed search for a new BFF. "This is actually the first summer where I didn't just lounge around in St. Tropez or a private beach somewhere -- I didn't take a vacation this summer because it's been non-stop work," writes Paris. "My favorite part of the summer has been the time I've gotten to spend on tour with my love Benj :) We always have the best time together and he's played some shows in some pretty rad places. Orlando for example, so we got to go to Disney World, which is always a blast! He's such an amazing boyfriend and so talented too ... I love watching him perform on stage, so hot! :) Loves it!" And even though Hilton spent Saturday shilling for her headband-attached, 100 percent polyester "Bandit" hair extensions (available at a Sally Beauty Supply store near you) while wearing what appeared to be a Bedazzled figure skating outfit, she gushingly adds, "Life couldn't be better."

Sienna and Balthazar are spotted having lunch in Malibu. (©X17Agency.com)

It must be exhausting dealing with the fallout of dating a still-married father of four, so it's not surprising Sienna Miller decided she needed a break. Over the weekend, paparazzi caught her in Ibiza, Spain, sunning and smoking with pals on board a yacht, sans boyfriend Balthazar Getty but with a bikini top. The London Daily Mail says the actress, whose London home was purportedly defaced last week with the spray-painted insult "slut," also hit a chichi Ibiza bash, where, a spy claims, "She spent most of the time dancing with some random guy who she kept asking to smell her armpits." Oh-kaaay. Meanwhile, depending on which tabloid-y source you believe, the reviled lovebirds are either searching for a California love nest or are already experiencing a hiccup or two. The London Sunday Mirror says the short-attention-span starlet and the actor-cum-oil scion recently toured a $20 million mansion in Malibu. "They came in together and were very touchy-feely. There was a lot of hand-holding," says a snitch. "There is a saltwater infinity pool and an open-air shower. Sienna loved that." Still, the price tag might be a bit steep given that Miller has yet to hit the big-screen jackpot and Getty reportedly doesn't have full access to his family's fortune. But is the pair already heading into tempestuous territory? The National Enquirer claims they had a tiff at the Chateau Marmont on Aug. 16, with Sienna announcing, "I'm leaving," as she "stormed off" into the ladies' room. Balthazar apparently waited around for a half-hour before exiting the hotel.

Lindsay Lohan tagged along to inamorata Samantha Ronson's DJ gig on Friday night at a Chicago hot spot, where they ended up receiving some words of encouragement from an oddly fitting source. ''Just be yourselves. Be who you are," Cyndi "Girls Just Want to Have Fun" Lauper was overheard telling the pair as she gave them "big hugs" at the club, according to the Chicago Sun-Times. "Nobody today cares about people's [sexual orientation] -- at least nobody you need to care about.'' Lindsay and Sam were reportedly "very affectionate" throughout the evening, although they likely toned down the PDA a couple of days later when they joined their moms for a night out in New York. Meanwhile, the hip-joined honeys recently raised eyebrows as they "giggled excitedly" while picking up more than $300 worth of baby booty at go-to Los Angeles baby boutique Petit Tresor, reports the New York Daily News, which says they made a point of telling staffers that neither of them is awaiting the stork.