Kate Middleton attended a friend's wedding in a familiar Topshop polka-dot dress on May 11. She was first spotted wearing the black and white look on her Warner Bros. studio tour back in April. This time, it was the perfect outfit for the Spring nuptials of Kate and Prince William's friends William van Cutsem and Rosie Keene, who tied the knot in Ewelme, England. William served as an usher at the ceremony while Kate's sister Pippa and brother James were also in attendance.

The wedding took place while Prince Harry was on his US tour, but now the young royal is back by his brother's side. The two made an official visit to Tidworth, England, yesterday to open four new Help For Heroes recovery centers, which serve wounded service personnel. Kate skipped this event, but that doesn't mean that she hasn't been keeping busy over the past week. Kate has reportedly been taking cooking classes with her new housekeeper, Antonella Fresolone, as she preps for the arrival of her first child. Kate's brother-in-law, Mike Tindall, says Kate is a natural mother, though she'll have plenty of help once the royal baby arrives.

The Cannes Film Festival is well under way, and the South of France has been flooded with stars. Adrien Brody arrived on the scene to charm Jessica Chastain at the special Cleopatra restored screening today, while Matt Damon got snap-happy during his Behind the Candelabra premiere with producer Jerry Weintraub and writer Richard LaGravenese. Alec Baldwin swept his wife, Hilaria Thomas, off her feet at a Seduced and Abandoned photocall earlier today, and Justin Timberlake had Jessica Biel by his side for a waterside stroll yesterday. Other stars like Michael Douglas, Milla Jovovich, Chris Tucker, and Rachel Bilson have also been getting in on the Cannes fun this week. Be sure to check back for more Cannes Film Festival photos, and don't forget to vote for your favorite stars in our POPSUGAR 100 bracket!

Matt Damon joined up with his Behind the Candelabra costar Michael Douglas to premiere their new film at the Cannes Film Festival today. Matt also had his wife Luciana by his side and they snapped pictures of all the action as they made their way down the carpet. Matt and Michael are screening their HBO project in the South of France before it officially hits the small screen on Sunday, May 26. Earlier in the day, Matt and Michael attended a photo call and a press conference. They have been doing quite a bit of press for the biopic, which follows Liberace, played by Michael, and his young lover, played by Matt. Naturally, a story about a couple had to involve love scenes, and Michael revealed in a recent interview he wasn't exactly put off by the idea of kissing one of America's best-looking actors. He said, "As far as making out with Matt, it’s not so bad. We rehearsed the scenes. For me, I guess the biggest thrill is, when I first saw it, after a few minutes, I really forget it’s Matt. Matt and Mike, you know? I just forget it’s us."

Matt is in Cannes after wrapping up filming for his upcoming film with George Clooney, The Monuments Men, in Germany. The pair celebrated finishing the film by having a boys weekend at George's Lake Como estate earlier this month.

Megan Fox and her Teenage Mutant Ninja Turtles costar Alan Ritchson made for a very odd sight as they shot a scene for the new film in NYC yesterday. Alan, who plays Raphael in the movie, was wearing a head-to-toe CGI suit, which was outfitted with antlers and a mock shell. Alan will be transformed into a CGI turtle in postproduction, but that doesn't make seeing the real-life creature out in public any less weird.

Meanwhile, Megan stuck to her simple April O'Neil costume of a yellow jacket and jeans. Earlier this month, Megan filmed with Will Arnett, who plays cameraman Vernon Fenwick in the live-action project. Don't forget to vote for Megan in our POPSUGAR 100 bracket for a chance to win a Victoria Beckham handbag!

Britney Spears was all smiles yesterday when she left a rehearsal studio in Thousand Oaks, CA. She's been making frequent stops at various dance studios after it was announced that she will be taking up residency at a casino in Las Vegas this coming Fall. Rumors popped up that Britney will be performing at Planet Hollywood, but there hasn't been an official confirmation just yet. Regardless, she has another big event to look forward to this Summer — the release of her new single, "Ooh La La." A version of the Smurfs 2 song leaked online last week, but Britney claims that it was only a demo. She tweeted on Friday, "I heard an early demo of 'Ooh La La' smurfed its way onto the Internet today. The real version will be on radio and iTunes June 16." Don't forget to vote for Britney in our POPSUGAR 100 bracket — you may even get a chance to win a Victoria Beckham handbag!

James Franco hit the red carpet at the Cannes Film Festival last night with his ex-girlfriend and current costar Ahna O'Reilly to premiere their new project, As I Lay Dying. The two were joined by costar Tim Blake Nelson as well as Rosario Dawson, who doesn't star in the film but does share a connection with James as they have both worked with Harmony Korine. (James starred in Harmony's most recent film, Spring Breakers, while Rosario made her film debut in 1995's Kids, which Harmony cowrote.) The premiere was a big deal for James, who also directed the movie. We caught up with Ahna earlier this week in Cannes, where she talked about how excited she was that James asked her to take on the female lead after the two had broken up. She said, "I knew James could get any number of actresses to play that role," adding, "I think he did a tremendous job and I'm so proud of it and proud of him."

Ahna also premiered her new project, Fruitvale Station, at Cannes earlier this week — be sure to check out Ahna, James, and all the other celebrities at the Cannes Film Festival!

Demi Moore showed off her fit frame when she stripped down to a red bikini while hanging out in Malibu on Sunday. Demi wore a bikini to her friend Harry Morton's home and appeared to be in a good mood while she chatted with a friend. Demi and Harry dated for six months, but the pair reportedly decided to call it quits last week. However, a source said that the two have "remained in regular contact" and are still close friends. Looking forward, Demi is preparing for the release of her newest film, Very Good Girls, which she premiered at the Sundance Film Festival in January.

In the wake of this weekend's split news, Robert Pattinson was spotted taking a truckload full of belongings as well as his two dogs out of Kristen Stewart's LA home yesterday. Rob had his pups, Bear and Bernie, in the passenger seat next to him as he left Kristen's gated community, and the bed of his truck was filled with a suitcase and several trash bags. He made the stop by Kristen's home after news broke this weekend that Robert and Kristen had broken up. Neither star has commented on the status of their relationship — the two are famously private about their dating history — but sources have noted that they may be back together in no time.

According to a previous report, Rob and Kristen are spending time apart in their separate houses after they didn't get together to celebrate Rob's 27th birthday last week. One source claimed that Rob skipped the party that Kristen planned for his big day, while another report claimed that Rob had a private bash at his own house, which Kristen didn't attend. The two looked like they were in good spirits, though, earlier this month when they flew out of NYC together following Kristen's appearance at the 2013 Met Gala.

Lena Dunham received a Medal of Distinction from Barnard College in NYC yesterday. She accepted the award alongside two other important individuals: Elizabeth Diller, the architect for the Big Apple's famed High Line, and Jimmie Briggs, a journalist and human rights activist. Lena tweeted her excitement about the event, writing, "I'm a guest at Barnard College graduation today. At my own graduation I sobbed, hit my mother and fell asleep, so pretty psyched for a redo." Afterward, Lena accompanied her boyfriend, Fun. guitarist Jack Antonoff, to the studio to watch him record a track and Instagrammed the adventure, writing, "Take your girlfriend to work night."

Lena wasn't the only star who made a stop by a college graduation over the past week — Michelle Obama gave the commencement speech at Bowie State University on Friday while her husband, Barack Obama, spoke at Morehouse College on Sunday.

Jessica Chastain arrived in Cannes over the weekend and she has already made a splash on the party circuit. She wore Shamballa earrings as she attended a Chanel and Vanity Fair dinner last night, alongside stars James Franco, Milla Jovovich, and Paz Vega. James stopped by the dinner after hosting a party in honor of his ex-girlfriend Ahna O'Reilly on a yacht earlier in the day. Ahna costars alongside James in his directorial debut, As I Lay Dying, which is premiering tonight at the festival.

As for Jessica, she is in the South of France to promote the 50th anniversary of Cleopatra. She will host a special screening of the newly restored project tomorrow and will also wear the famous emerald and diamond necklace Richard Burton gave to Elizabeth Taylor during the production of the film. Jessica stopped over in Cannes after wrapping up filming for her latest project, Miss Julie, in Ireland. Jessica posted photos of her visit to Ireland on her Facebook page, noting that it was "tough to say goodbye" to the Emerald Isle.

This week, POPSUGARTV touched on everything that you need to get your Summer off to a great start. We counted down the best Office episodes of all time as we prepared for the series finale and found inspiration from nature to create a stylish Summer wardrobe. On the beauty front, we tested out new bronzers to get that perfect tan glow and shared our classic salsa recipe for you to use at your outdoor dinner parties.

Click through to watch all these videos and visit POPSUGARTV for even more great shows!

Sofia Vergara put her killer curves on display when she hit the blue carpet at the USA upfronts in NYC yesterday. She was joined at the bash by her Modern Family costars Julie Bowen and Eric Stonestreet, as well as USA stars like Matthew Bomer and Suits' Patrick J. Adams. Sofia and her castmates were at the USA event to celebrate the syndication of the show's old episodes on the cable network, which will begin on Sept. 24. Meanwhile, new episodes of Modern Family will continue to run on ABC.

Sofia has another big event to plan for — her upcoming wedding with fiancé Nick Loeb. She revealed in this month's issue of Cosmopolitan that she isn't going to plan a big splash event for the nuptials. Sofia told the magazine, "He was already married with a big wedding and I was already married with a big wedding, so we're going to do something but not right now."

Gisele Bündchen held on tight to her 5-month-old daughter, Vivian, yesterday when she went for a stroll in NYC with a female friend. She's back in the Big Apple after visiting the city earlier this month when she attended the 2013 Met Gala alongside husband Tom Brady. Incidentally, her recent trip comes right as Jennifer Aniston wrapped up her visit to NYC to promote her new web series for Living Proof. During interviews on her press tour, Jen admitted that she loves Gisele's hair. Aside from great hair, the two stars have another thing in common — they both love yoga! Jennifer has long been a fan of the exercise, and Gisele shared a snap of herself practicing yoga with a friend on Tuesday. She said, "A beautiful way to start the morning practice with my friend Cristina Kalyani Paes. Wishing you a joyful day!"