Exclusive details from Jennifer Aniston's perfume appearance in London, Zac Efron sends a message to Lindsay Lohan at his Charlie St. Cloud premiere, and Jon Hamm spills as many details as he can about season four of Mad Men. Watch today's all new PopSugar Rush now!

Jon Hamm, Christina Hendricks, Elisabeth Moss, and more Mad Men and women tell us as much as they can about the new season at their big LA premiere last night. Jon also reveals a bit about what we can expect from Don when he returns on Sunday and his hopes for his big-screen comedy cameo alongside Kristen Wiig and Maya Rudolph in Bridesmaids. Christina also says her newlywed and womanly advice for her character would be, "Get the hell out, Joan!" Watch our exclusive red carpet video on PopSugar Rush now!

Zac Efron was perfectly put together, right down to his tie clip, for his big premiere of Charlie St. Cloud in LA last night. He had his girlfriend Vanessa Hudgens on his arm after expressing to us how relieved he is that the two aren't going up against each other at the box office as initially planned. He and Vanessa have been happily together since their High School Musical days, though Zac says he's not looking to get married anytime soon. Vanessa, meanwhile, is excited and hard at work preparing to play Mimi in the Hollywood Bowl production of Rent next month. Zac has been crisscrossing the country to promote the film, including a stop at the Mall of America on Monday, the ESPYs in LA last week, and the East Coast before that. He has another busy nine days before his movie comes out July 30 — stay tuned for our interviews with Zac and the rest of the cast later this week!

To see more of Zac, Vanessa, and his costars, just read more

Sienna Miller sported another cute two-piece from her collection to hit the beach in Italy with Jude Law yesterday. This time the happy couple was joined by his children, who splashed around in the waves. So far, Sienna and Jude's romantic getaway has included many intimate moments and adult beverages. Sienna's bikini body looks perfectly tanned after so many days in the sun alongside her man, who has his own sexy tan. Sienna was eliminated from this month's beachy girl bracket, but Jude is already looking great for when we turn the tables and vote on all the shirtless guys in August.

To see more Sienna and Jude, just read more

Lindsay Lohan begins serving her jail sentence. Plus, our exclusive red carpet video as Angelina Jolie brings a beardless Brad Pitt as her date to the Salt premiere, and Steve Carell tells us about a possible romance for his last season on The Office. Watch for a cameo from our new game PopSugar's Retail Therapy on today's all-new PopSugar Rush!

That makes a trio of mugshots for Lindsay Lohan! The starlet posed for yet another bleached-blond booking photo as she checked into the Lynwood Correctional Facility in LA today. The far left picture is just hours ago, the middle was when she served 84 minutes in jail in November 2007, and the right one is from her original DUI arrest in July 2007. She just started serving her 90-day sentence after being cuffed and taken out of court this morning. Apparently Lindsay is being cooperative behind bars so far, and we really do wish her the best over the next few weeks. Looks like she'll once again be up against herself in the best mugshot of the year poll — which is your favorite?

Angelina Jolie brought a beard-free Brad Pitt to the LA premiere of Salt, where father Jon Voight and brother James Haven also showed up for support. On the red carpet she chatted about getting back into the action world while the director shared what made Angelina so perfect for the role. Check out our exclusive video on PopSugar Rush now!

Jennifer Aniston gave a slight smile as she walked through LAX yesterday afternoon. She was on her way to London for the official debut of her scent Lolavie at Harrods on Wednesday. Jennifer's been relaxing around home for the last few weeks, though she's never out of the spotlight as rumors circulated about two dinner dates with men. New promo shots for the fragrance show a sexy topless Aniston on the shore, which is the latest in her long history of starring in ads. Jennifer's famous figure also landed her a spot in our Bikini Bracket elite eight. She's up against Halle Berry — cast your votes now for a chance to win an iPhone 4!

To see more Jennifer, just read more

Jennifer Aniston shows lots of skin in her new perfume pics, Lindsay Lohan shows off her bikini body before jail, and Zac Efron tells us about avoiding a box office faceoff with girlfriend Vanessa Hudgens. Watch today's all new PopSugar Rush!

Jon Hamm had a black-tie Saturday when he sported a tux for a photo shoot in LA. We're officially less than one week away from the return of Mad Men, and as the excitement builds, Buzz wants to know: who is your favorite character on the show? Jon's Don Draper may change the way people look at him in a suit forever, but he has two big-screen projects coming up that will show us more sides of Mr. Hamm. We just got trailers for Howl, which he stars in with James Franco, and Ben Affleck's latest directorial project, The Town. The latter of those movies landed Jon a sexy W Magazine cover with Rebecca Hall. Jon will also be hitting the red carpet again tomorrow with the rest of the Mad Men cast to premiere the new season!

To see more of Jon, just read more

Kellan Lutz shows off his sexy arms while girlfriend AnnaLynne models a bikini at her pool party in Las Vegas. Watch video of her celebrating in her two-piece on PopSugar Rush!

The Kardashian sisters all came out to celebrate when their friends Khadijah Haqq and Bobby McCray got married in LA on Saturday. The groom plays for the New Orleans Saints so Kim's ex Reggie Bush was in the bridal party. Reggie looked happy to see the whole family and chatted with Bruce Jenner and the rest of the crew. Bridesmaid Khloe was accompanied by her husband, Lamar Odom, while Kourtney and Scott Disick were also among the guests. It's the second wedding in two weeks for the Kardashians after their girl Lala Vasquez tied the knot in NYC last weekend. Kim didn't have her new boyfriend, Miles Austin, as a date for this special event, which probably helped make things less awkward when she ran into Reggie.

To see more of Kim, Khloe, Kourtney, and the rest of the guests, just read more

Katy Perry hit the beach wearing a tiny two-piece with a group of friends in the Bahamas yesterday. Her amazing curves earned her a place in our Bikini Bracket sweet 16, and she's currently beating Vanessa Minnillo, though their matchup is anyone's game! Katy is beach bound in the Caribbean straight off shooting her latest music video in Santa Barbara, where she took a dip in her underwear and made out with a guy. Her real-life love, fiance Russell Brand, is in NYC, and even from afar she appreciates his hotness as he works on his new movie Arthur.

Lovebirds Sienna Miller and Jude Law stocked up on essentials, like beer and water, at the grocery store in Italy on Saturday. The two are vacationing in Ponza and are making sure to keep the party going strong with the necessary beverages. Jude and Sienna were spotted having a shirtless and bikini, PDA-filled day on the beach with friends earlier in the week during the extended holiday. Jude showed off some chest in his flowy tank top, and sun-kissed iconic beauty Sienna's outfit was perfect for the relaxed atmosphere and warm weather as they enjoyed another day in paradise.

To see more of Sienna and Jude, just read more

Reese Witherspoon filled Saturday with her two main men, Deacon and Jim Toth. She accompanied the little guy to a friend's birthday party and grabbed tacos with Jim Toth in the afternoon. This midday meal was more casual than their Thursday date when she had time off filming, but it was back to work for the actress to finish off the week. She spent Friday dressed for a fancy scene on the set of Water for Elephants alongside tuxedo-wearing Robert Pattinson and Christoph Waltz. Production is almost finished on the movie, which means a break from seeing Reese and Rob acting side by side until much closer to the 2011 release.

To see more of Reese with Deacon and Jim, just read more

Paris and Nicky Hilton were in the lap of luxury as they lounged on a yacht off the coast of Sardinia yesterday. The sisters sported bikinis, which Paris thought was the perfect look for her jetskiing adventure. The weekend got off to a bit of drama, however, when a report surfaced saying Paris had been detained at the airport in Corsica for having a small amount of marijuana in her purse. The heiress denied that any such thing went down, though it was the second pot-related drama in a month after a similar incident at the World Cup. Still, she clearly isn't letting it get in the way of all the fun on her extended vacation, and today she went into town for a fan-filled shopping adventure. Paris didn't make it into the sweet 16 of our Bikini Bracket, but you should cast your votes for a chance to win an iPhone 4.

Lots more of Paris and Nicky in their bikinis so read more

Robert Pattinson, Reese Witherspoon, and Christoph Waltz were dressed to the nines for a long afternoon of filming Water for Elephants on Friday in LA. Rob's getting used to sporting that tuxedo when he isn't getting down and dirty with adorable costars. He loosened up a bit when the cameras stopped rolling, undoing his bowtie and checking his phone — no iPhone 4 upgrade for him yet. Reese had some of the week off, which meant daytime dates with Jim Toth, though she was back in action yesterday. Her character has quite the collection of gowns, and the last time she was all decked out it also meant romantic scenes with Rob. Christoph Waltz followed right behind Rob as they left the set at the end of filming.

To see more of Reese, Robert, and Cristoph just read more

Penelope Cruz and Javier Bardem revealed exciting news this week when their rep confirmed the longtime loves got married! We took a look back at their best romantic moments from the past, and here's a gem from the first ever project they worked on together. Penelope and Javier met on the set of the Spanish film Jamon, Jamon in 1992, and here's a clip showing their pretty sweet dance moves from that movie — so cute. Congrats again to the newlyweds, we can't wait to see them out as husband and wife!

Did you know that reigning PopSugar Bikini Bracket champ Bar Refaeli has been modeling since she was 8 months old, or that Halle Berry prefers to sip on Diet Coke when she's lying out? Feast your eyes on the 16 sexiest bikini bods and find out some fun tidbits about the finalists. Watch it all on PopSugar Rush now!