Shirtless

Happy Memorial Day Weekend! To celebrate the unofficial start of Summer, we're looking at the celebs who love their warm-weather getaways. They're often spotted escaping to tropical locales, checking out city parks, or flying overseas with family when the weather warms up. Jessica Biel hit the surf while visiting Justin Timberlake on location in Puerto Rico, while the Kerr-Bloom family spent time together in Bora Bora. George Clooney took Stacy Keibler for a motorcycle ride around Lake Como, Italy, and Selena Gomez and Justin Bieber frolicked in the waves during a PDA-filled Hawaiian trip.

Click through to see all the awesome Summer vacations, and Happy Memorial Day!

Leonardo DiCaprio had a busy few days at the Cannes Film Festival last week as he promoted The Great Gatsby. He teamed up with his costars Carey Mulligan, Tobey Maguire, and Isla Fisher for multiple events including the glamorous Gatsby red carpet premiere that opened the festival, but his trip to France wasn't all about work. On Friday, Leo let loose at a nightclub, where he danced with friends, including Lukas Haas, and a few lucky ladies. Leo tried to keep a low profile with his hat on, but he was spotted mingling in the crowd and showing off his moves while also smoking on an electronic cigarette.

He followed up the late-night fun by hanging out on a yacht over the weekend and on Tuesday he made his way back out on the water. Leo and Lukas were joined by a group of guys and girls to lounge on Phillip Green's luxury vessel, where Leo went shirtless and even snapped a picture of himself while smoking a cigar. Later in the evening, Leo took the party indoors to attend jewelry brand de Grisogono's Cannes cocktail party. He was once again surrounded by a handful of young, beautiful women while sipping on a glass of champagne.

Leo stayed behind in France while the rest of his Gatsby costars headed Down Under for the film's Australian premiere. While promoting the movie in his native country, director Baz Luhrman explained Leo's absence saying, "I know he made the right decision. He shouldn't be here. There are things in your own personal life where you've got to draw a line and we talked about it. He did exactly the right thing in my opinion."

It's the end of an era: David Beckham has announced that he will retire from soccer at the end of this season. While he may have made a name for himself (taking his shirt off) on the field as one of the sports' most iconic athletes, he has also become famous for one other thing: his sizzling underwear ads. Judging from his iconic spreads for Emporio Armani in 2009 and his most recent campaign for his line of bodywear for H&M, we can only hope this job is one that the sexy footballer won't soon retire from.

David Beckham announced earlier today that he is retiring from soccer so we'll never get to see him get shirtless on the field again. David has been playing professionally since 1993, which means we've had almost 20 years of Becks stripping off his shirt and showing his abs. Click through to see David's hottest on-field moments from over the years and here's to hoping that retiring from soccer will mean David will have more time for underwear modeling!

Patrick Dempsey hit the beach shirtless with his wife, Jillian, and their three children, Tallulah, Darby, and Sullivan, in the Caribbean on Tuesday. The tropical vacation may be a celebratory one since Patrick wrapped yet another season with his long-running show Grey's Anatomy. The season nine finale airs tonight on ABC, and the network recently announced more good news, revealing that Grey's will be renewed for a 10th season.

Before Patrick headed off on vacation, he took time to meet with cancer survivors at the Tuesday start of the Amgen Tour of California, which is America's biggest cycling event. Patrick is an ambassador for the tour and for the Breakaway From Cancer charity, which is involved in "supporting the riders and honoring local cancer survivors from tour communities throughout the race."

Tiger Woods and his girlfriend, Lindsey Vonn, kicked off the week with a relaxing afternoon on the water in Palm Beach. On Tuesday, the duo went boating on Tiger's yacht, Solitude, with his kids, Charlie and Sam. Tiger lounged shirtless while he fished off the side of the vessel, and Lindsey was spotted snapping pictures from the dock in her bikini. The couple are back to Tiger's home base in Florida after traveling to NYC to attend the Met Gala earlier this month. Tiger will be on the go again soon, though, since he's set to host his annual Tiger Jam charity poker tournament in Las Vegas this Friday and Saturday.

Tiger and Lindsey have been going strong since revealing their relationship in March and have showed mutual support for each other publicly. Lindsey's had Tiger by her side as she recovers from the knee injury she sustained during the skiing world championships in Austria in February, and she cheered him on during the Masters last month.

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.

Hayden Panettiere hit the beach on Mother's Day with her boyfriend, Wladimir Klitschko, in Miami. The couple seem to be making a trend of spending holidays on the warm Florida sand since they also celebrated Easter on the beach back in March. Hayden may have had time for a bikini break, but she's also gearing up for the season finale of Nashville, which will air on May 22. While Hayden has gotten a lot of praise for her sassy role on the show as country star Juliette Barnes, she admits that she wants to distance herself from the character. Hayden said in a recent interview with New York Magazine, "I would need to separate myself from Juliette Barnes and be seen as Hayden. And that's a very difficult thing to do sometimes." Hayden added that despite critics linking Juliette to Taylor Swift, she doesn't model her after the pop singer. She said, "[The comparison] kept coming out, and I didn't want her to feel like it was per me, or that I was thinking that I was playing her."

Zac Efron unbuttoned his shirt and showed off his six-pack while filming Townies in LA yesterday. He got into the sports scenes with a few props including a basketball and baseball bat, but the real focus was on his tanned abs. Zac's been busy filming the college-set comedy since March, though his scenes haven't been all hard work. Zac kissed a costar during one rowdy take last month and has also sported a bathrobe and other costumes for the cameras. He did take a break from the on-set fun to promote a more serious project, At Any Price, at the Tribeca Film Festival after debuting the movie at the Venice Film Festival last year.

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.