stars on set

Matt Damon and Michael Douglas were back to work on Behind the Candelabra in Palm Springs on Monday. Michael plays Liberace while Matt inhabits the role of his lover, Scott Thorson, in the movie, and filming has already given us a glimpse at the amazing hair and wardrobe we can expect when it hits HBO. Pilates with wife Luciana Damon helped Matt get in shape for the role, which so far has had him showing off a clean, waxed chest on set.

While on the West Coast for work, Matt and his family also found time to catch up with the Garner-Afflecks, including their newest addition and first son, Samuel. Matt and Luciana have four daughters and while meeting the baby boy must be a treat, they've said they're capped out when it comes to kids of their own.

Some of Hollywood's hottest celebrities were busy this week. In London, Naomi Watts hit the set of Diana wearing a brunette wig, while Lea Michele was spotted in NYC shooting a scene for Glee. Daniel Radcliffe stepped onto the F Word set for the first day of filming in Toronto, and in LA, Selena Gomez planted a kiss on Nat Wolff for Parental Guidance. Click through to see more stars on the set!

Glee creator Ryan Murphy shared a sexy photo of Kate Hudson dancing on set yesterday. He's been snapping pictures of the show's stars in preparation for the Sept. 13 season premiere. Last month, Ryan showed Kate posing with Lea Michele while they were in character, adding, "Ms. Lea Michele and Kate Hudson on the NYADA set. Kate had chandelier approval."

Kate is guest starring in six episodes during Glee's fourth season. She'll be playing Cassandra July, Rachel's dance teacher at her new performing arts school. Another A-list star to join the cast this year is Sarah Jessica Parker. She's portraying a Vogue editor, and was recently spotted meeting up with the actual Vogue editor in chief, Anna Wintour, in NYC.

Jennifer Aniston reported to the North Carolina set of We're the Millers for another day in front of the cameras this afternoon. She let her bra peek through her tank top during filming, which got started late last month. Jennifer plays a prostitute in the movie and has already shared scenes with Jason Sudeikis and Emma Roberts. While Jennifer's busy working, her boyfriend, Justin Theroux, has been hanging out in NYC. Justin is in the running for our 2012 Shirtless Bracket title, after he showed off his rock-hard abs during an overseas getaway with Jennifer in June — make sure to vote for your favorite shirtless star!

Sofia Vergara got into character on the LA set of Modern Family today. She was sporting a fake baby bump since her role as Gloria has her pregnant in the upcoming season. Sofia was joined by her onscreen son, Rico Rodriguez, for the latest day of filming after production got under way last week. Sofia had a busy Summer during the break that included her 40th birthday celebration with friends and family in Mexico. She flaunted her bikini body on the beach, which may have helped her win our 2012 Bikini Bracket competition! Sofia's big party was made even better when she got engaged to boyfriend Nick Loeb, though she's yet to comment on the exciting relationship news.

Jennifer Aniston arrived to the Wilmington, NC, set of We're The Millers in very short shorts and a simple white tank top yesterday. The Summer look is classic Jennifer, who is forever the quintessential t-shirt and jeans girl. When it came time to film, however, Jennifer was back in her character's more conservative wardrobe, once again consisting of capri-length khakis and a sleeveless button-down shirt. Jennifer has been in North Carolina working on the film for the past few weeks alongside costars Jason Sudeikis, Emma Stone, and Kathryn Hahn. In the movie Jennifer plays a prostitute who agrees to pose as Jason Sudeikis's character's wife to help him smuggle drugs into the country.

While Jennifer is off working, her man is currently cleaning up in our 2012 Shirtless Bracket. Justin Theroux's amazing six-pack has him currently in 11th place overall, though it may be hard to unseat the current frontrunner: Robert Pattinson.

Blake Lively chatted on her cell phone while filming Gossip Girl in NYC yesterday. The cast is back to work filming the show's final season, which begins airing in October. Blake was spotted earlier this week meeting up with Leighton Meester and Ed Westwick on the Manhattan set.

Blake is returning to TV in more ways than one. Her commercial for Gucci's Première fragrance was released this week and features the actress in a glamorous gold gown overlooking the LA skyline. Her boyfriend, Ryan Reynolds, will also be making an appearance on the small screen with his second cameo on Family Guy later this year.

Matt Damon got back into his retro gear on the set of Behind the Candelabra in LA yesterday. He filmed with costar Dan Aykroyd for Steven Soderbergh's upcoming Liberace biopic. Matt first debuted his new look, sporting a full blond wig and waxed chest, when he reported to set on Monday. Although Matt is focused on his latest project on the West Coast, he's also somewhat of a presence during the London Olympics. His voice can be heard as the narrator of the United Airlines and TD Ameritrade commercials playing on NBC throughout the Summer Games.

Emily VanCamp slipped into a sexy red dress to film Revenge with costar Josh Bowman in Marina del Rey, CA, yesterday. The onscreen and real-life couple are working on the series, which returns on Sept. 30, after a Summer hiatus. Emily and Josh took advantage of the downtime with brunch dates and a trip to Monaco, where they promoted their TV hit and showed PDA poolside. Emily's bikini time landed her in our 2012 Bikini Bracket — click through to see all the swimsuit-clad stars! Just last month, Emily and Josh met up with their costar Gabriel Mann for a night out in LA. The cast will soon welcome a new member, with the addition of Jennifer Jason Leigh, who will play Emily's mom on the show.

Temperatures may be heating up, but that's not stopping many stars from working hard on sets around the world. Ben Affleck and Justin Timberlake shared a scene in Puerto Rico, while Jennifer Aniston got in front of the cameras in North Carolina. Keira Knightley filmed on the streets of NYC, and AnnaLynne McCord showed off her bikini body for 90210 in Malibu. Click through to see all the stars on set this week!