Celebrity PDA

Marion Cotillard got dressed up in a Dior gown to join her costars Zoe Saldana, in Valentino, and Clive Owen and director Guillaume Canet on the Cannes red carpet for the premiere of their film Blood Ties this evening. It was a busy day for the crew since they got together for a photocall and press conference at the film festival this morning. Marion and her partner, Guillaume, who directed her in Blood Ties, were able to sneak in a kiss while celebrating the film together earlier today. Missing from the action was Mila Kunis, who is also in the film but currently stationed in London shooting Jupiter Ascending.

Marion has been making the rounds in France since last week, stepping out for the Chopard lunch on Friday and making a fashionable stop in Monaco to fulfill her duties as the face of Dior at the brand's cruise collection runway show on Saturday.

The 2013 Cannes Film Festival is underway, and along with our star-studded arrival coverage, we're taking a look back at some of our favorite celebrity boating moments. When it comes to Cannes, stars love to let loose at yacht parties, but they also hop on board during their downtime in other locations. Brad Pitt, George Clooney, and Matt Damon set sail together to promote Ocean's Twelve, while Beyoncé got some sun before diving in for a snorkeling session. Scarlett Johansson lounged in her bikini with her bodyguard, and Kate Moss held hands with Jamie Hince while leaping from a lavish vessel in St. Tropez.

We're celebrating Cannes with a cheeky look at celebs on boats — click through to see their best moments afloat!

Source: Tumblr user Beyoncé Knowles, Getty, FameFlynet

The honeymoon continued for Keira Knightley and her new husband, James Righton, in Corsica today. Keira wore a bikini for a dip in the ocean, though she's showed off other looks with her laid-back honeymoon style, which has even included wearing the same dress three different ways! For her dressed-down swim, she was joined by shirtless James, who showered her with kisses in the water. They've been all about the sweet PDA during their romantic getaway and showed similar affection while enjoying lunch and strolling the beach last week.

Keira and James jetted off to France after tying the knot on May 4. They were wed at the town hall in Mazan and celebrated after the ceremony with friends and family at a reception held at her parents' farmhouse.

Jennifer Lopez and Casper Smart snuck in a sweet kiss while they were out in NYC yesterday. The couple joined up for a romantic lunch date, and Jennifer also braved the rain to run errands solo. Jennifer and Casper have been spending time in NYC since attending the Met Gala together on Monday. Along with her beau, Jennifer was accompanied by Michael Kors as she wore one of his designs to the museum's annual event.

This past week wasn't all fun for Jennifer, though, since she had a scary encounter while filming her new music video in Fort Lauderdale, FL, over the weekend. J Lo was rushed off the set of her video for "Live It Up" after gunshots were fired near their shooting location.

Jennifer Lopez hit the Fort Lauderdale, FL, set of her new music video for "Live It Up" with Pitbull yesterday. J Lo's boyfriend Casper Smart kept a close eye on the shoot, which included what looked like a kiss between J Lo and Pitbull. The duo didn't actually lock lips for the cameras, but they did get close dancing and singing. J Lo also filmed her own sexy moments in both a black string bikini and a nude one piece. Casper got into the fun, too, and went shirtless in the sand during the action, which, according to Casper's Twitter account, lasted 18 hours. Things got complicated though, when J Lo had to be rushed off the set after gunshots were fired nearby.

J Lo and Casper let loose on the beach for work after spending last weekend in Las Vegas partying. The couple celebrated Hakkasan Nightclub's grand opening at the MGM Grand. At the event, J Lo apparently chatted with Tiësto about possibly collaborating on a new track.

Keira Knightley gave her fiancé, James Righton, a big kiss Monday when she picked him up from the airport in Nice with her mom, Sharman Macdonald. Earlier this week, the UK press was full of reports that Keira and James are getting married this weekend in the South of France. If the stories are true, Keira, James, and her mother are certainly in the right spot. Additional rumors suggest that Keira, a longtime face of Chanel, is having Karl Lagerfeld design her wedding dress.

Keira and James have been together for two years and got engaged last May. While making the press rounds for her film Anna Karenina, Keira spoke about her wedding plans, saying, "I could have six fake weddings. God, that would be expensive. We're not really big-wedding types. I don't need to have all that."

Mariah Carey and Nick Cannon are celebrating five years of marriage today, and we've rounded up their sweetest moments to celebrate their lasting love. Last year Mariah and Nick renewed their wedding vows in Paris, and this year they started the anniversary festivities a little early, boarding a private jet with their twins, Monroe and Moroccan Cannon, for a family getaway in March. Click through to see the couple's precious moments together, from red carpet kisses to entertaining costume changes and more.

Kate Middleton and Prince William celebrate their second wedding anniversary today! Since their gorgeous nuptials back in 2011, the duo has shared many sweet moments in the spotlight. Click through to see Will and Kate getting cute in front of crowds, showing affection for the cameras, and more as we celebrate their big day and wedding season on POPSUGAR.

Channing Tatum was hand in hand with his pregnant wife, Jenna Dewan, who wore a Rachel Pally dress, for a stroll with their dogs in London today. The couple's outing came after an exciting weekend for Channing, who turned 33 on Friday. Channing and Jenna will mark more than one special occasion while in London since they are preparing to welcome their first baby overseas while Channing is stationed there to film Jupiter Ascending.

Along with shooting his latest project, Channing has kept busy on the promotional trail for another one of his films. Last weekend, Channing showed off his moves on the dance floor with costars Jamie Foxx and Maggie Gyllenhaal to celebrate their film White House Down during a party in Cancun, Mexico.

Johnny Depp and Amber Heard were photographed showing PDA Saturday night as they left a secret Rolling Stones show at LA's Echoplex. Johnny and Amber costarred in the 2011 film The Rum Diary but have kept any possible romance out of the spotlight until now. Amber was able to mingle with the Stones, thanks to Johnny's longtime friendship with Keith Richards. Johnny and Amber were among the 700 people who saw the Stones after the band announced the show on Twitter earlier in the afternoon.

Amber and Johnny were just two of many celebrity guests last night. Also out to see Keith, Mick Jagger, Charlie Watts, and Ron Wood do their thing were Gwen Stefani, Mary-Kate Olsen, Ashley Olsen, Owen Wilson, and Maria Shriver. Bruce Willis, who has a vacation home near Keith at Parrot Cay in Turks and Caicos, also attended with his wife, Emma Heming. Stones wives and girlfriends Patti Hansen and L'Wren Scott and 65-year-old Ron's wife of four months, 35-year-old Sally Humphreys, were there, too. The Stones got in last night's show before kicking off their "50 & Counting" world tour this Friday at LA's Staples Center.